SUBSTITUTED 2-FUSED PHENYLPYRIDINES WITH HERBICIDAL ACTIVITY

Abstract: A substituted 2-phenylpyridine of formula (I), where Ar is a radical (A) or (B) and where the ring R is a fused heterocyclic ring which, together with the phenyl ring, forms one of the following bicyclic rings (a) to (l) and the N-oxides of (I) and the agriculturally utilizable salts of (I) if these exist. Use: herbicides, desiccation/defoliation of plants.

Description: SUBSTITUTED 2- FUSED PHENYLPYRIDINES WITH HERBICIDAL ACTIVITY The present invention relates to novel substituted 2-phenyl- pyridines of the formula I where the substituents have the following meanings: R 1 , R 3 and R 4 independently of one another are hydrogen, halogen, Cι~C 4 -alkyl, Cχ-C 4 -haloalkyl, Cι-C 4 -alkoxy-Cι-C 4 -alkyl, Cι-C 4 -alkoxy, Cχ-C -alkoxy- Cι~C -alkoxy, hydroxyl, Cι-C -haloalkoxy, (Ci-Cs-alkyl)- carbonyloxy, (Ci-Cs-haloalkyl)carbonyloxy, SH, Ci—C 4 —alkylthio, Cι-C -alkylsulfinyl, Cι-C 4 -alkylsulfonyl, Cι-C 4 -haloalkylthio, Cι-C 4 -haloalkylsulfinyl, Cι-C 4 -haloalkylsulfonyl, formyl, cyano, hydroxycarbonyl, (Cι-C 4 -alkoxy) carbonyl, Cχ-C -alkoxy-(Cι-C 4 -alkoxy)carbonyl, (Cι-C 4 -haloalkoxy)- carbonyl, (Cι-C -alkyl)carbonyl, (Cι-C 4 -haloalkyl)carbonyl, Cι-C 4 -alkoxy-(Cι-C 4 -alkyl)carbonyl, CONH 2 , (Cι-C 4 -alkyl)amino- carbonyl, di(Cι-C 4 -alkyl)aminocarbonyl, pyrrolidinylcarbonyl, piperidinylcarbonyl, morpholinylcarbonyl, nitro, amino, Cι-C -alkylamino, di(Cι~C -alkyl)amino, pyrrolidinyl, piperidinyl, morpholinyl, (C 1 -C 4 -alkyl) carbonylamino, (Cι-C 4 -haloalkyl)carbonylamino or Cι-C 4 -alkylsulfonylamino; R 2 is halogen, cyano, nitro, Cι-C 4 -alkyl, Cι-C 4 -haloalkyl, Cχ-C -alkoxy, Cι~C 4 -haloalkoxy, Cι-C 4 -alkylthio, Cι-C 4 -haloalkyl- thio or together with R 1 or with R 3 is a trimethylene or tetramethylene chain; Ar is a radical where R 5 is hydrogen or halogen; X is oxygen or sulfur; R 17 is halogen, cyano, nitro, hydroxyl, Cι-C 4 -alkoxy or trifluormethyl; R 18 is hydrogen, Ci-Cε-alkyl, Cχ-C 6 -haloalkyl or Cι-C -alkoxy-Cι-C -alkyl and R 19 is hydrogen or Ci-Cε-alkyl and where the ring R is a fused heterocyclic ring which, together with the phenyl ring, forms one of the following bicyclic rings (a) to (1) : (a) (b) (c) (d) (e) (f) (g) (h) (k) ( 1 ) R 6 , R 7 and R 10 independently of one another are hydrogen, Ci-Cε-alkyl, C -C 6 -alkenyl, C -C 6 -alkynyl, Ci-Cε-halo- al yl, C 2 -C 6 -haloalkenyl, C 2 -C 6 -haloalkynyl, Cι-C 4 -alkoxy- Cι-C 4 -alkyl, Cι-C 4 -alkoxy-Cι-C 2 -alkoxy-Cι-C 4 -alkyl, 1-phenyl- propen-3-yl, cyano-Cι-C 4 -alkyl, C 3 -C 6 -cycloalkyl-Cι-C 6 -alkyl, (1-methylthiocycloprop-1-yl) -methyl, carboxyl-Cι-C 4 -alkyl, (Cι-C 6 -alkoxy)carbonyl-Cι-C 4 -alkyl, (Cι-C 6 -haloalkoxy)carbonyl- Cι-C 4 -alkyl, Cι-C 4 -alkoxy-(Cι-C -alkox )carbonyl-Cι-C 4 -alkyl, (Ci-C δ -alkoxy)carbonyl-(Cι-C -alkoxy)carbonyl-Cι-C 4 -alkyl, C 3 -C 6 -cycloalkyl-(Cι-C -alkoxy)carbonyl-Cι-C 4 -alkyl, Ci-Cs-alkyl- aminocarbonyl-Cι-C 4 -alky1, di-(Ci-Cs-alkyl)aminocarbonyl- Cι-C 4 -alkyl, C 3 -C 6 -cycloalkyl, Cι-C 4 -alkylthio-Cι-C 4 -alkyl, Cι-C 4 -alkylsulfonyl, C 3 -C 6 -alkenyloxy-Cι-C 4 -alkyl, Ci-Cβ-alkylcar- bonyl, Ci-C θ -alkoxycarbonyl, Ci-C δ -alkoxy, oxetan-3-yl-oxycarbo- nyl-Cι-C 4 -alkyl, thietan-3-yl-oxycarbonyl-Cι-C 4 -alkyl, oxetan-3-ylmethyl, 3-(Cι-C 4 -alkyl)-oxetan-3-ylmethyl or benzyl, which can be unsubstituted or can carry one to three radicals selected from the group consisting of halogen, Cι-C 4 -alkyl and Cι-C 4 -alkoxy; R 8 and R 9 independently of one another are hydrogen, Cι-C 4 -alkyl, hydroxycarbonyl, (Cι-C -alkoxy)carbonyl or together are ethylene, propylene, butylene, pentylene or hexy- lene; R 11 , R 12 , R 13 and R 14 independently of one another are hydrogen, halogen, Cι-C 6 -alkyl, Ci-Cβ-haloalkyl or C 1 -C 4 —alkoxy- Cι-C 4 -alkyl; R 15 and R 16 independently of one another are hydrogen, chlorine, bromine, Ci-Cs-alkyl, -OR 20 , -SR 21 or -N(R 22 )-R 23 ; R 20 and R 21 independently of one another are hydrogen, Ci-Ca-alkyl, Ci-Cs-haloalkyl, C 4 -C -cycloalkyl, which for its part can carry up to three Cχ-C 3 -alkyl radicals, C 3 -C 6 -alkenyl, C 5 -C -cycloalkenyl, which for its part can carry up to three Cι-C 3 -alkyl radicals, C 3 -C6~haloalkenyl, cyano- Ci-Cβ-alkyl, C 3 -C 6 -alkynyl, Cι-C 4 -alkoxy-Cι-C 4 -alkyl, 2-tetra- hydrofuranyl-Cχ-C 8 -alkyl, 3-oxetanyl, 3-thietanyl, carboxyl- Ci-Cβ-alkyl, (Ci-Cβ-alkoxy)carbonyl-Ci-Ce-alkyl, (Ci-Cβ-alkoxy) car¬ bonyl-(C 3 -C 7 -cycloalkyl) , Cι-C 4 -alkoxy- (Cχ-C 4 -alkoxy)carbonyl- Cχ-C 6 -alkyl, cyclopropylmethyl, (1-methylthiocyclo- prop-1-yl)methyl, -CH(SH)-COOH, -CH(SH)-CO-(Cι-C 8 -alkoxy) , -CH(Cι-C 8 -alkylthio)-COOH, -CH(Cι-C 4 -alkylthio)-CO-(Ci-Ca-alkoxy) , -CH 2 -CO-N(R 9 )-R 10 , -CH(Cι-C 4 -alkyl)-CO-N(R 9 )-R 10 , -C(Cι-C 4 -alkyl) 2 -CO-N(R 9 )-R 10 , -CH 2 -CO-N(R 9 )-S0 2 - (Cι-C 4 -alkyl) , -CH(Cι-C 4 -alkyl)-CO-N(R 9 )-S0 2 -(Cι-C 4 ~alkyl) , -C(C ! -C 4 -alkyl) 2 -CO-N(R 9 )- S0 2 -(Cι-C 4 -alkyl) , -S-CO-NH 2 , -S-CO-N(Cι-C 4 -alkyl)-(Cι-C 4 -alkyl) , -CH 2 -CO-0-(Cι-C 6 -alkylene)- COOH, -CH 2 -CO-0-(Cx-C δ -alkylene)-CO-(Ci-Ce-alkoxy) , -C(Cι-C 4 -alkyl) 2 -CO-0-(Cι-C 6 -alkylene)-COOH, -C(Cι-C 4 -alkyl) 2 -CO-0-(Cι-C 4 -alkylene)-CO-(Cι-C 6 -alkoxy) , -CH(Cι-C 4 -alkyl)-CO-O-(Cι-C 6 -alkylene)-COOH, -CH(Cι-C 4 -alkyl)-CO-O- (Cι-C 6 -alkylene)-CO-(Cι-C 6 -alkoxy) , C 3 -C 9 -(α-alkylalkylidene)iminooxy-Cι-C 6 -alkyl, phenyl, phenyl- Ci-Cg-alkyl, phenyl-C 3 -C 6 -alkenyl, phenyl-C 3 -C 6 ~alkynyl or phenoxy- Ci-Cβ-alkyl, where the phenyl ring in each case can be unsubsti¬ tuted or can carry one to three radicals selected from the group consisting of halogen, nitro, cyano, Cι-C 4 -alkyl, Cι~C 4 -alkoxy, Cι~C 4 -alkylthio, Cχ-C 4 -haloalkyl and C 2 -C 6 ~alkenyl, 5- or 6-mem- bered heteroaryl, heteroaryl-Ci-Cβ-alkyl, heteroaryl-C 3 -C 6 -alke- nyl, heteroaryl-C 3 -C 6 -alkynyl or heteroaryloxy-Ci-Cβ-alkyl, where the heteroaromatic in each case contains one to three hetero atoms selected from a group consisting of one or two nitrogen atoms and an oxygen or sulfur atom, and where the heteroaromatic if desired can additionally carry on each substitutable ring atom a radical selected from the group consisting of hydroxyl, ha¬ logen, Cι-C4-alkyl, Cι-C 4 -alkoxy, Cι-C 4 -alkylthio and Cι-C 4 -haloal- kyl; R 22 and R 23 independently of one another are hydrogen, Ci-Cs-alkyl, C 2 -Cβ-alkenyl, C 3 -C 8 -alkynyl, Ci-Cs-haloalkyl, Cι-C 4 -alkoxy-Cι-C 4 -alkyl, Cχ-C 4 -alkylthio- Cι-C 4 ~alkyl, cyano-Ci-Cβ-alkyl, carboxyl-Cι~C 4 -alkyl, (Cχ-C 4 -alk- oxy)carbonyl-Cι-C 4 -alkyl, (Ci-Cβ-alkoxy)carbonyl-(C 3 -C 7 -cycloal- kyl) , Cι-C 4 -alkylsulfonyl-Cι-C 4 -alkyl, C 3 -C 8 -cycloalkyl, Cι-C 6 -alk- oxy, (C 3 -C 6 -cycloalkoxy)-carbonyl-Cι-C 4 -alkyl, Cχ-C 4 -alkoxy- (Cι-C 4 -alkoxy)carbonyl-Cι-C 4 -alkyl, phenyl, phenyl-Cι-C 4 ~alkyl, where the phenyl ring in each case can be unsubstituted or can carry one to three radicals selected from the group consisting of halogen, nitro, cyano, Cι~C 4 -alkyl, Cι~C 4 -alkoxy, Cι-C 4 -alkylthio, Cι-C 4 ~haloalkyl and C 2 -C 6 ~alkenyl, 5- or 6-membered heteroaryl or heteroaryl-Cι-C 4 -alkyl, where the heteroaromatic contains one to three hetero atoms selected from a group consisting of one or two nitrogen atoms and an oxygen or sulfur atom, and where the heter¬ oaromatic if desired can additionally carry on each substitutable ring atom a radical selected from the group consisting of hydrox¬ yl, halogen, Cχ-C 4 -alkyl, Cχ-C 4 -alkoxy, Cι~C 4 -alkylthio and Cι-C 4 -haloalkyl; and the N-oxides of I and the agriculturally utilizable salts of I if these exist. In addition the invention relates to the use of compounds I, their N-oxides and/or agriculturally utilizable salts as herbicides and for the desiccation and/or defoliation of plants, - herbicidal compositions and compositions for the desiccation and/or defoliation of plants, which contain the compounds I, their N-oxides and/or agriculturally utilizable salts as ac¬ tive substances, - processes for preparing these herbicidal compositions and compositions for the desiccation and/or defoliation of plants. processes for controlling undesired plant growth and for the desiccation and/or defoliation of plants using the compounds I, and also using the N-oxides and the agriculturally utiliz¬ able salts of I, and also processes for preparing the compounds I. The invention additionally relates to the use of phenylpyridines of the formula IV where the substituents R 1 to R 5 have the same meanings as in the compounds I and R 26 is fluorine, hydroxyl or Ci-Cε-alkoxy, and of aromatic boronic acids and boronic acid esters XIX and to novel 2-(4-hydroxy-5-nitrophenyl)pyridines IX, 2-(4-hydroxy-5- aminophenyl)pyridines X and carboxanilides XII. 2-Phenylpyridines have hitherto been disclosed in the following publications: EP-A 167 491; EP-A 412 681; WO 94/05153; WO 92/10118; WO 92/22203; CA 114(11), 96724k: Izv. Timirya- zevsk.S-Kh. Akad. 3, 155-160; Pestic. Sci. 21(3), 175-179; CA 113(19), 171837j: Nippon Kagaku Kaishi 5, 466-471; JP 12 11586. P. Boy et al. (Synlett 12, 923) describe the preparation of 4- [ (trifluoromethyl)pyridyl]phenols: R b = hydrogen or trifluoromethyl; R c = hydrogen or tert-butyl. N. Katagiri et al. (Che . Pharm. Bull. i≤. (9), 3354-72) describe the preparation of substituted 2-phenylpyridines: where R d is hydrogen, chlorine or methoxy, R e is hydrogen, methyl, ethyl or ethoxy and R f is hydrogen or methyl or R e and R f together are (CH ) 3 or (CH 2 ) 4 . Finally, 2,6-diarylpyridine derivatives having herbicidal and de¬ foliating properties have been disclosed in DE-A 40 20 257: where R ~ and R h are hydrogen, halogen, alkyl, alkoxy or haloalkyl, R 1 is hydrogen, halogen, cyano, alkyl, alkoxy or haloalkyl and R k and R 1 are hydrogen or alkyl. If the known compounds have a herbicidal or desiccant/defoliant action at all, they are not always completely satisfactory. It was an object of the present invention to provide novel, in particular herbicidally active, compounds with which undesired plants can specifically be controlled better than previously. We have now found the present substituted 2-phenylpyridines of the formula I. Herbicidal corrpositions have also been found which contain the compounds I and have a good herbicidal action. They are tolerable or selective, particularly in gramineous crops such as wheat, maize and rice. Novel intermediates of the formulae IX, X and XII for preparing the substituted 2-phenylpyridines I have additionally been found. The compounds I according to the invention are additionally suit¬ able for the defoliation and desiccation of parts of plants for eg. cotton, potato, rape, sunflower, soybean or field beans. The organic molecular moieties mentioned above for the substitu- ents R 1 to R 27 or as radicals of (hetero)aromatics are, like the meaning halogen, collective terms for individual lists of the in¬ dividual group members. All hydrocarbon chains, ie. all alkyl, alkenyl, alkynyl, haloalkyl, haloalkenyl, haloalkynyl and haloalkoxy moieties, and the α-alkylalkylidene moiety, can be straight-chain or branched. Halogenated substituents preferably carry one to five identical or different halogen atoms. Specific examples of the moieties are: halogen: fluorine, chlorine, bromine and iodine, preferably fluorine and chlorine; - Cι-C 4 -alkyl: methyl, ethyl, n-propyl, 1-methylethyl, n-butyl, 1-methylpropyl, 2-methylpropyl and 1,1-dimethylethyl; Ci-Cε-alkyl: Cχ-C 4 -alkyl as mentioned above, and also n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, n-hexyl, 1,1-dimethyl- propyl, 1,2-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1,1-dimethylbutyl, 1,2-di- methylbutyl, 1,3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-di- methylbutyl, 3,3-dimethylbutyl, 1-ethylbutyl, 2-ethylbutyl, 1, 1,2-trimethylpropyl, 1,2,2-trimethylpropyl, 1-ethyl-l- methylpropyl and l-ethyl-2-methylpropyl; Ci-Cs-alkyl: Ci-Cβ-alkyl as mentioned above, and also, inter alia, n-heptyl, n-octyl; C 2 -C 4 ~alkenyl : ethenyl, prop-1-en-l-yl, prop-2-en-l-yl, 1-me- thylethenyl, n-buten-1-yl, n-buten-2-yl, n-buten-3-yl, 1-methylprop-l-en-l-yl, 2-methylproρ-l-en-l-yl, 1-methyl- prop-2-en-l-yl and 2-methylprop-2-en-l-yl; C 3 -C δ -alkenyl : prop-1-en-l-yl , prop-2-en-l-yl , 1-methyl- ethenyl , n-buten-1-yl , n-buten-2-yl , n-buten-3-yl , 1-methyl- prop-1-en-l-yl , 2-methylprop-l-en-l-yl , 1-methyl- prop-2-en-l-yl , 2-me hylprop-2-en-l-yl , n-penten-1-yl , n-penten-2-yl , n-penten-3-yl , n-penten-4-yl , 1 -methy 1- but-1-en-l-yl , 2-methylbut-l-en-l-yl , 3-methyl- but-1-en-l-yl , l-methylbut-2-en-l-yl , 2-methyl- but-2-en-l-yl , 3-methylbut-2-en-l-yl , 1-methyl- but-3-en-l-yl , 2-methylbut-3-en-l-yl , 3-methylbut-3-en-l-yl , l , l-dimethylprop-2-en-l-yl , 1 , 2-dimethylprop-l-en-l-yl , l , 2-dimethylprop-2-en-l-yl , l-ethylprop-l-en-2-yl , 1-ethyl- prop-2-en-l-yl , n-hex-1-en-l-yl , n-hex-2-en-l-yl , n-hex-3-en-l-yl , n-hex-4-en-l-yl , n-hex-5-en-l-yl , 1-methyl- pent-1-en-l-yl , 2-methylpent-l-en-l-yl , 3-methylpent- 1-en-l-yl , 4-methylpent-l-en-l-yl , l-methylpent-2-en-l-yl , 2-methylpent-2-en-l-yl, 3-methylpent-2-en-l-yl, 4-methylpent- 2-en-l-yl, l-methylpent-3-en-l-yl, 2-methylpent-3-en-l-yl, 3-methylpent-3-en-l-yl, 4-methylpent-3-en-l-yl, 1-methylpent- 4-en-l-yl, 2-methylpent-4-en-l-yl, 3-methylpent-4-en-l-yl, 4-methylpent-4-en-l-yl, 1,l-dimethylbut-2-en-l-yl, 1,l-dimethylbut-3-en-l-yl, 1,2-dimethylbut-l-en-l-yl, 1,2-dimethylbut-2-en-l-yl, 1,2-dimethylbut-3-en-l-yl, 1,3-dimethylbut-l-en-l-yl, 1,3-dimethylbut-2-en-l-yl, 1,3-dimethylbut-3-en-l-yl, 2,2-dimethylbut-3-en-l-yl, 2,3-dimethylbut-l-en-l-yl, 2,3-dimethylbut-2-en-l-yl, 2,3-dimethylbut-3-en-l-yl, 3,3-dimethylbut-l-en-l-yl, 3,3-dimethylbut-2-en-l-yl, 1-ethylbut-l-en-l-yl, 1-ethylbut- 2-en-l-yl, l-ethylbut-3-en-l-yl, 2-ethylbut-l-en-l-yl, 2-ethylbut-2-en-l-yl, 2-ethylbut-3-en-l-yl, 1,1,2-trimethyl- prop-2-en-l-yl, l-ethyl-l-methylprop-2-en-l-yl, l-ethyl-2- methyl-prop-1-en-l-yl and l-ethyl-2-methyl-prop-2-en-l-yl, preferably ethenyl and prop-2-en-l-yl; C 2 -Cβ-alkenyl: ethenyl, C 3 -C 6 -alkenyl as mentioned above, and, inter alia, n-hept-1-en-l-yl, n-hept-2-en-l-yl, n-hept-3-en-l-yl, n-hept-4-en-l-yl, n-hept-5-en-l-yl, n-hept-6-en-l-yl, n-oct-1-en-l-yl, n-oct-2-en-l-yl, n-oct-3-en-l-yl, n-oct-4-en-l-yl, n-oct-5-en-l-yl, n-oct-6-en-l-yl and n-oct-7-en-l-yl; C 2 -C 6 -alkynyl : ethynyl and C 3 -C 6 ~alkynyl such as prop-1- yn-l-yl , prop-2-yn-3-yl , n-but-1-yn-l-yl , n-but-l-yn-4-yl , n-but-2-yn-l-yl , n-pent-1-yn-l-yl , n-pent-l-yn-3-yl , n-pent-l-yn-4-yl , n-pent-l-yn-5-yl, n-pent-2-yn-l-yl , n-pent-2-yn-4-yl , n-pent-2-yn-5-yl , 3-methylbut-l-yn-l-yl , 3-methylbut-l-yn-3-yl , 3-methylbut-l-yn-4-yl , n-hex-1-yn-l-yl , n-hex-l-yn-3-yl , n-hex-l-yn-4-yl , n-hex-l-yn-5-yl, n-hex-l-yn-6-yl, n-hex-2-yn-l-yl, n-hex-2-yn-4-yl, n-hex-2-yn-5-yl, n-hex-2-yn-6-yl, n-hex-3-yn-l-yl, n-hex-3-yn-2-yl, 3-methylpent-l-yn-l-yl, 3-methylpent-l-yn-3-yl, 3-methylpent-l-yn-4-yl, 3-methylpent- l-yn-5-yl, 4-methylpent-l-yn-l-yl, 4-methylpent-2-yn-4-yl and 4-methylpent-2-yn-5-yl, preferably prop-2-yn-l-yl and 1-methylprop-2-yn-l-yl; C -C 8 -alkynyl: ethynyl, C 3 -C 6 ~alkynyl as mentioned above, and, inter alia, n-hept-1-yn-l-yl, n-hept-2-yn-l-yl, n-hept-3-yn-l-yl, n-hept-4-yn-l-yl, n-hept-5-yn-l-yl, n-hept-6-yn-l-yl, n-oct-1-yn-l-yl, n-oct-2-yn-l-yl, n-oct-3-yn-l-yl, n-oct-4-yn-l-yl, n-oct-5-yn-l-yl, n-oct-6-yn-l-yl and n-oct-7-yn-l-yl; C 3 -C 6 -haloalkenyl: C 3 -C 6 -alkenyl as mentioned above, where in each case one to three hydrogen atoms are replaced by fluorine, chlorine and/or bromine; - C 2 -C 8 -haloalkenyl: C 2 -C 8 -alkenyl as mentioned above, where in each case one to three hydrogen atoms are replaced by fluorine, chlorine and/or bromine; C 2 -C8-haloalkynyl: C 2 -C 8 -alkynyl as mentioned above, where in each case one to three hydrogen atoms are replaced by fluorine, chlorine and/or bromine; C 3 -C 6 -cycloalkyl: cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl, preferably cyclopropyl, cyclopentyl and cyclohexyl; C 4 -C 7 -cycloalkyl: cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl, preferably cyclopentyl and cyclohexyl; - C 5 -C 7 -cycloalkenyl eg.: cyclopent-1-enyl, cyclopent-2-enyl, cyclopent-3-enyl, cyclohex-1-enyl, cyclohex-2-enyl, cyclohex-3-enyl, cyclohept-1-enyl, cyclohept-2-enyl, cyclohept-3-enyl and cyclohept-4-enyl; - (C 3 -Ce-cycloalkoxy)carbonyl: cyclopropoxycarbonyl, cyclo- butoxycarbonyl, cyclopentoxycarbonyl and cyclohexoxycarbonyl, preferably cyclopropoxycarbonyl, cyclopentoxycarbonyl and cyclohexoxycarbonyl; - Cχ-C 4 -haloalkyl: Cι-C 4 ~alkyl as mentioned above, which is partially or completely substituted by fluorine, chlorine and/or bromine, that is eg. chloro ethyl, dichloromethyl, trichloromethyl, fluoromethyl, difluoromethyl, trifluoromethyl, chlorofluoromethyl, dichlorofluoromethyl, chlorodifluoromethyl, 1-fluoroethyl, 2-fluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, 2-chloro-2-fluoro- ethyl, 2-chloro-2,2-difluoroethyl, 2,2-dichloro-2-fluoro- ethyl, 2,2,2-trichloroethyl, pentafluoroethyl and 3-chloropropyl, preferably trifluoromethyl; Cι-C 6 -haloalkyl: Cι-C 6 -alkyl as mentioned above, which is partially or completely substituted by fluorine, chlorine and/or bromine; Ci-Cs-haloalkyl: Ci-Cβ-alkyl as mentioned above, which is partially or completely substituted by fluorine, chlorine and/or bromine, that is eg. the abovemen ioned Cι-C 4 -haloalkyls; cyano-Ci-Cβ-alkyl: Ci-Cs-alkyl as mentioned above, where in each case one hydrogen atom is replaced by the cyano group, that is eg. cyanomethyl, 1-cyanoeth-l-yl, 2-cyanoeth-l-yl, 1-cyanoprop-l-yl, 2-cyanoprop-l-yl, 3-cyanoprop-l-yl, l-cyanoprop-2-yl, 2-cyanoprop-2-yl, 1-cyanobut-l-yl, 2-cyano- but-l-yl, 3-cyanobut-l-yl, 4-cyanobut-l-yl, l-cyanobut-2-yl, 2-cyanobut-2-yl, l-cyanobut-3-yl, 2-cyanobut-3-yl, l-cyano-2-methylprop-3-yl, 2-cyano-2-methylprop-3-yl, 3-cyano-2-methylprop-3-yl, and 2-cyanomethylprop-2-yl, preferably cyanomethyl and 1-cyano-l-methylethyl; phenyl-Cι-C 4 -allςyl: Cι-C 4 ~alkyl as mentioned above, where in each case one hydrogen atom is replaced by the phenyl group, that is eg. benzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylprop-l-yl, 2-phenylprop-l-yl, 3-phenylprop-l-yl, 1-phenylbut-l-yl, 2-phenylbut-l-yl, 3-phenylbut-l-yl, 4-phenylbut-l-yl, l-phenylbut-2-yl, 2-phenylbut-2-yl, 3-phenylbut-2-yl, 3-phenylbut-2-yl, 4-phenylbut-2-yl, 1-(phenylmethyl)- eth-l-yl, 1-(phenylmethyl)-1- (methyl)eth-l-yl and 1-(phenyl- methyl)prop-l-yl, preferably benzyl; phenyl-Ci-Cε-alkyl: Ci-C 6 -alkyl as mentioned above, where in each case one hydrogen atom is replaced by the phenyl group, that is eg. the abovementioned phenyl-Cι-C 4 -alkyls; phenyl-C 3 -C 6 -alkenyl: C 3 -Ce-alkenyl as mentioned above, where one hydrogen atom in each case is replaced by the phenyl grou ; phenyl-C 3 -C 6 -alkynyl: C 3 -C 6 -alkynyl as mentioned above, where one hydrogen atom in each case is replaced by the phenyl group; - Cι-C 4 -alkoxy: methoxy, ethoxy, n-propoxy, 1-methylethoxy, n-butoxy, 1-methyIpropoxy, 2-methyIpropoxy and 1, 1-dimethyl- ethoxy, preferably methoxy, ethoxy and 1-methylethoxy; Ci-Cε-alkoxy: Cι-C 4 ~alkoxy as mentioned above, and also n-pentoxy, 1-methylbutox , 2-methylbutoxy, 3-methylbutoxy, 1, 1-dimethyIpropoxy, 1,2-dimeth Ipropoxy, 2,2-dimethyl- propoxy, 1-ethyIpropoxy, n-hexoxy, 1-methylpentoxy, 2-methyl- pentoxy, 3-methylpentoxy, 4-methylpentoxy, 1,1-dimethyl- butoxy, 1,2-dimethylbutoxy, 1,3-dimethylbutoxy, 2,2-dimethyl- butoxy, 2,3-dimethylbutoxy, 3,3-dimethylbutoxy, 1-ethyl- butoxy, 2-ethylbutoxy, 1,1,2-trimethyIpropoxy, 1,2,2-trimethyIpropoxy, 1-ethyl-l-methyIpropoxy and 1-ethy1-2-methyIpropoxy; - Ci-Cβ-alkoxy: Ci-Cβ-alkoxy as mentioned above and also eg. n-heptoxy and n-octoxy; Cι-C 4 -haloalkoxy: Cι-C 4 -alkoxy as mentioned above, which is partially or completely substituted by fluorine, chlorine and/or bromine, that is eg. chloromethoxy, dichloromethoxy, trichloromethoxy, fluoromethoxy, difluoromethoxy, trifluoromethoxy, chlorofluoromethoxy, dichlorofluoromethoxy, chlorodifluoromethoxy, 1-fluoroethoxy, 2-fluoroethoxy, 2,2-difluoroethoxy, 2,2,2-trifluoroethoxy, 2-chloro-2-fluoroethoxy, 2-chloro-2,2-difluoroethoxy, 2,2-dichloro-2-fluoroethoxy, 2,2,2-trichloroethoxy and pentafluoroethoxy, preferably Cι-C 2 -haloalkoxy such as trifluoromethoxy; - Cι-C 4 -alkylthio: methylthio, ethylthio, n-propylthio, 1-methylethylthio, n-butylthio, 1-methylpropylthio, 2-methylpropylthio and 1,1-dimethylethylthio, preferably methylthio, ethylthio and methylethylthio; - Cι-C 4 -haloalkylthio: chloromethylthio, dichloromethylthio, trichloromethylthio, fluoromethylthio, difluoromethylthio, trifluoromethylthio, chlorofluoromethylthio, dichlorofluoromethylthio, chlorodifluoromethylthio, 1-fluoroethylthio, 2-fluoroethylthio, 2,2-difluoroethylthio, 2,2,2-trifluoro- ethylthio, 2-chloro-2-fluoroethylthio, 2-chlor-2,2-difluoroethylthio, 2,2-dichloro-2-fluoroethylthio, 2,2,2-trichloroethylthio and pentafluoroethylthio, preferably Cι-C 2 -haloalkylthio such as trifluoromethylthio; C 3 -C6~alkenyloxy : prop-1-en-l-yloxy, prop-2-en-l-yloxy, 1-methylethenyloxy, n-buten-1-yloxy, n-buten-2-yloxy, n-buten-3-yloxy, 1-methylprop-1-en-l-yloxy, 2-methylprop-l- en-1-yloxy, 1-methylprop-2-en-l-yloxy, 2-methylprop- 2-en-l-yloxy, n-penten-1-yloxy, n-penten-2-yloxy, n-penten-3-yloxy, n-penten-4-yloxy, 1-methylbut-l-en-l-yloxy, 2-methylbut-l-en-l-yloxy, 3-methylbut-l-en-l-yloxy, 1-methylbut-2-en-l-yloxy, 2-methylbut-2-en-l-yloxy, 3-methylbut-2-en-l-yloxy, 1-methylbut-3-en-l-yloxy, 2-methylbut-3-en-l-yloxy, 3-methylbut-3-en-l-yloxy, 1,1-dimethylprop-2-en-l-yloxy, 1,2-dimethylprop-1-en-l-yloxy, l,2-dimethylprop-2-en-l-yloxy, 1-ethylprop-l-en-2-yloxy, 1-ethylprop-2-en-l-yloxy, n-hex-1-en-l-yloxy, n-hex-2-en-l-yloxy, n-hex-3-en-l-yloxy, n-hex-4-en-l-yloxy, n-hex-5-en-l-yloxy, 1-methylpent-1-en-l-yloxy, 2-methylpent-l-en-l-yloxy, 3-methylpent-l-en-l-yloxy, 4-methylpent-l-en-l-yloxy, 1-methylpent-2-en-l-yloxy, 2-methylpent-2-en-l-yloxy, 3-methylpent-2-en-l-yloxy, 4-methylpent-2-en-l-yloxy, l-methylpent-3-en-l-yloxy, 2-methylpent-3-en-l-yloxy, 3-methylpent-3-en-l-yloxy, 4-methylpent-3-en-l-yloxy, 1-methylpent-4-en-l-yloxy, 2-methylpent-4-en-l-yloxy, 3-methylpent-4-en-l-yloxy, 4-methylpent-4-en-l-yloxy, 1,1-dimethylbut-2-en-l-yloxy, 1,l-dimethylbut-3-en-l-yloxy, 1,2-dimethylbut-l-en-l-yloxy, l,2-dimethylbut-2-en-l-yloxy, l,2-dimethylbut-3-en-l-yloxy, 1,3-dimethylbut-l-en-l-yloxy, 1,3-dimethylbut-2-en-l-yloxy, l,3-dimethylbut-3-en-l-yloxy, 2,2-dimethylbut-3-en-l-yloxy, 2,3-dimethylbut-l-en-l-yloxy, 2,3-dimethylbut-2-en-l-yloxy, 2,3-dimethylbut-3-en-l-yloxy, 3,3-dimethylbut-l-en-l-yloxy, 3,3-dimethylbut-2-en-l-yloxy, 1-ethylbut-1-en-l-yloxy, l-ethylbut-2-en-l-yloxy, 1-ethylbut-3-en-l-yloxy, 2-ethylbut-l-en-l-yloxy, 2-ethylbut-2-en-l-yloxy, 2-ethylbut-3-en-l-yloxy, 1,1,2-trimethylprop-2-en-l-yloxy, 1-ethy1-1-methylprop-2-en-1-yloxy, l-ethyl-2-methy1- prop-1-en-l-yloxy and l-ethyl-2-methylprop-2-en-l-yloxy, preferably ethenyloxy and prop-2-en-l-yloxy; phenoxy-Cι-C 4 -alkyl: phenoxymethyl, 1-phenoxyethy1, 2-phenoxyethyl, 1-phenoxyprop-l-yl, 2-phenoxyprop-l-yl, 3-phenoxyprop-l-yl, 1-phenoxybut-l-yl, 2-phenox but-1-yl, 3-phenoxybut-l-yl, 4-phenoxybut-l-yl, l-phenoxybut-2-yl, 2-phenoxybut-2-yl, 3-phenoxybut-2-yl, 3-phenoxybut-2-yl, 4-phenoxybut-2-yl, 1-(phenoxymethyl)eth-l-yl, 1-(phenoxymethyl)-1-(methyl)eth-l-yl and 1-(phenoxymethyl)- prop-1-yl, preferably phenoxymethyl; Cι-C 4 -alkylamino: methylamino, ethylamino, n-propylamino, 1-methylethylamino, n-butylamino, 1-methylpropylamino, 2-methylpropylamino and 1,1-dimethylethylamino, preferably methylamino and ethylamino; di-(Cι-C 4 -alkyl)amino: N,N-dimethylamino, N,N-diethylamino, N, -dipropylamino, N,N-di-(1-methylethy1)amino, N,N-dibutylamino, N, -di-(1-methyIpropyl)amino, N,N-di-(2-methyIpropyl)amino, N,N-di-(1,1-dimethyl- ethyl)amino, N-ethyl-N-methylamino, N-methyl-N-propylamino, N-methyl-N-(1-methylethy1)amino, N-butyl-N-methylamino, N-methyl-N-(1-methyIpropyl)amino, N-methyl-N-(2-methyl- propy1)amino, N-(1,1-dimethylethyl)-N-methylamino, N-ethy1-N-propylamino, N-ethy1-N-(1-methylethyl)amino, N-buty1-N-ethylamino, N-ethy1-N-(1-methyIpropyl)amino, N-ethy1-N-(2-methyIpropyl)amino, N-ethy1-N-(1,1-dimethyl- ethyl)amino, N-(1-methylethyl)-N-propylamino, N-buty1-N-propylamino, N-{1-methyIpropyl)-N-propylamino, N-(2-methyIpropyl)-N-propylamino, N-(1,1-dimethylethyl)-N- propylamino, N-butyl-N-(1-methylethyl)amino, N- (1-methylethyl)-N-(1-methyIpropyl)amino, N-(1-methylethy1)- N-(2-methyIpropyl)amino, N-(1,1-dimethylethyl)-N-(1-methyl¬ ethy1)amino, N-butyl-N-(1-methyIpropyl)amino, N-buty1-N- (2-methyIpropyl)amino, N-butyl-N-(1,1-dimethylethyl)amino, N- (1-methyIpropyl)-N-(2-methyIpropyl)amino, N-(1,1-dimethy1- ethyl)-N-(1-methyIpropyl)amino and N-(1,1-dimethylethyl)- N- (2-methyIpropyl)amino, preferably dimethylamino and diethylamino; Cι-C 4 -alkylaminocarbonyl: methylaminocarbonyl, ethylaminocarbonyl, n-propylaminocarbony1, 1-methylethylaminocarbonyl, n-butylaminocarbonyl, 1-methyIpropylaminocarbonyl, 2-methyIpropylaminocarbonyl and 1,1-dimethylethylaminocarbonyl, preferably methylamino- carbonyl und ethylaminocarbonyl; di-(Cι-C 4 -alkyl)aminocarbonyl: N,N-dimethylaminocarbonyl, N, -diethylaminocarbonyl, N,N-dipropylaminocarbonyl, N, -di-(1-methylethy1)aminocarbony1, , -dibutylamino- carbonyl, N,N-di-(1-methyIpropyl)aminocarbony1, N,N-di- (2-methyIpropyl)aminocarbonyl, N,N-di-(1,1-dimethy1- ethyl)aminocarbonyl, N-ethy1-N-methylaminocarbony1, N-methy1- N-propylaminocarbony1, N-methyl-N- (1-methylethyl)amino¬ carbonyl, N-butyl-N-methylaminocarbonyl, N-methyl- N- (1-methyIpropyl)aminocarbonyl, N-methyl-N-(2-methyl- propyl)aminocarbonyl, N-(1,1-dimethylethy1)-N-methylamino¬ carbonyl, N-ethyl-N-propylaminocarbonyl, N-ethyl-N-(1-methy1- ethyl)aminocarbonyl, N-buty1-N-ethylaminocarbonyl, N-ethy1- N-(1-methyIpropyl)aminocarbonyl, N-ethyl-N-(2-methyl- propyl)aminocarbonyl, N-ethyl-N-(1, 1-dimethylethy1)amino¬ carbonyl, N-(1-methylethyl)-N-propylaminocarbonyl, N-buty1-N-propylaminocarbonyl, N-(1-methyIpropyl)-N-propyl- aminocarbonyl, N-(2-methyIpropyl)-N-propylaminocarbonyl, N-(1,1-dimethylethyl)-N-propylaminocarbonyl, N-butyl- N-(1-methylethyl)aminocarbonyl, N-(1-methylethyl)- N-(1-methyIpropyl)aminocarbonyl, N-(1-methylethyl)- N-(2-methyIpropyl)aminocarbonyl, N-(1,1-dimethylethyI)- N- (1-methylethyl)aminocarbonyl, N-butyl-N-(1-methy1- propyl)aminocarbonyl, N-butyl-N-(2-methyIpropyl)amino¬ carbonyl, N-butyl-N-(1,1-dimethylethyl)aminocarbonyl, N-(1-methyIpropyl)-N-(2-methyIpropyl)aminocarbonyl, N-(1,1-dimethylethyl)-N-(1-methyIpropyl)aminocarbonyl and N-(1,1-dimethylethyl)-N-(2-methyIpropyl)aminocarbonyl, preferably dimethylaminocarbonyl and diethylaminocarbonyl; Cι-C 4 -alkylsulfonyl: methylsulfonyl, ethylsulfonyl, n-propylsulfonyl, 1-methylethylsulfonyl, n-butylsulfonyl, 1-methylpropylsulfonyl, 2-methylpropylsulfonyl and 1,1-dimethylethylsulfonyl; Cι-C4-alkylsulfinyl: methylsulfinyl, ethylsulfinyl, n-propylsulfinyl, 1-methylethylsulfinyl, n-butylsulfinyl, 1-methylpropylsulfinyl, 2-methylpropylsulfinyl and 1,1-dimethylethylsulfinyl; Cι-C 4 -alkyIsulfonylamino: methyIsulfonylamino, ethylsulfonyl- amino, n-propylsulfonylamino, 1-methylethylsulfonylamino, n-butyIsulfonylamino, 1-methylpropylsulfonylamino, 2-methyl- propylsulfonylamino and 1,1-dimethylethylsulfonylamino; Cι-C 4 -haloalkylsulfonyl: Cι-C 4 -alkylsulfonyl as mentioned above, which is partially or completely substituted by fluorine, chlorine and/or bromine, that is eg. chloromethyl- sulfonyl, dichloromethylsulfonyl, trichloromethylsulfonyl, fluoromethylsulfonyl, difluoromethylsulfonyl, trifluoro- methylsulfonyl, chlorofluoromethylsulfonyl, dichlorofluoromethylsulfonyl, chlorodifluoromethylsulfonyl, 1-fluoroethylsulfonyl, 2-fluoroethylsulfonyl, 2,2-difluoro- ethylsulfonyl, 2,2,2-trifluoroethylsulfonyl, 2-chloro-2- fluoroethylsulfonyl, 2-chloro-2,2-difluoroethylsulfonyl, 2,2-dichloro-2-fluoroethylsulfonyl, 2,2,2-trichloro- ethylsulfonyl and pentafluoroethylsulfonyl, preferably trichloromethylsulfonyl and trifluoromethylsulfonyl; Cχ-C 4 -haloalkylsulfinyl: Cι-C 4 -alkylsulfinyl as mentioned above, which is partially or completely substituted by fluorine, chlorine and/or bromine, that is eg. chloromethyl- sulfinyl, dichloromethylsulfinyl, trichloromethylsulfinyl, fluoromethylsulfinyl, difluoromethylsulfinyl, trifluoromethylsulfinyl, chlorofluoromethylsulfinyl, dichlorofluoromethylsulfinyl, chlorodifluoromethylsulfinyl, 1-fluoroethylsulfinyl, 2-fluoroethylsulfinyl, 2,2-difluoro- ethylsulfinyl, 2,2,2-trifluoroethylsulfinyl, 2-chloro-2- fluoroethylsulfinyl, 2-chloro-2,2-difluoroethylsulfinyl, 2,2-dichloro-2-fluoroethylsulfinyl, 2,2,2-trichloro- ethylsulfinyl and pentafluoroethylsulfinyl,preferably trichloromethylsulfinyl and trifluoromethylsulfinyl; C 3 -C 9 -(α-alkylalkylidene)iminooxy eg.: α-methylethylidene- iminooxy and α-methylpropylideneiminooxy. For the meanings 5- or 6-membered heteroaryl and heteroaryl-Cι-C 4 -alkyl, the following heteroaromatics are suitable: 2-furyl, 3-furyl, 2-thienyl, 3-thienyl, 2-pyrrolyl, 3-pyrrolyl, 3-isoxazolyl, 4-isoxazolyl, 5-isoxazolyl, 3-isothiazolyl, 4-isothiazolyl, 5-isothiazolyl, 3-pyrazolyl, 4-pyrazolyl, 5-pyrazolyl, 2-oxazolyl, 4-oxazolyl, 5-oxazolyl, 2-thiazolyl, 4-thiazolyl, 5-thiazolyl, 2-imidazolyl, 4-imidazolyl, 1,2,4-oxadiazol-3-yl, 1,2,4-oxadiazol-5-yl, 1,2,4- thiadiazol-3-yl, 1,2,4-thiadiazol-5-yl, 1,2,4-triazol-3-yl, l,3,4-oxadiazol-2-yl, 1,3,4-thiadiazol-2-yl, 1,3,4-triazol-2-yl, 2-pyridinyl, 3-pyridinyl, 4-pyridinyl, 3-pyridazinyl, 4-pyridazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 2-pyrazinyl, 1,3,5-triazin-2-yl and l,2,4-triazin-3-yl. Suitable agriculturally utilizable cations are especially those cations which do not adversely affect the herbicidal action of the compounds I, in particular the ions of the alkali metals, preferably sodium and potassium, of the alkaline earth metals, preferably calcium, magnesium and barium, and of the transition metals, preferably manganese, copper, zinc and iron, and also the ammonium ion, which if desired can carry one to three Cι-C 4 -alkyl or hydroxy-Cι-C 4 -alkyl substituents and/or a phenyl or benzyl sub- stituent, preferably diisopropylammonium, tetramethylammonium, tetrabutylammonium, trimethylbenzylammonium and trimethyl(2- hydroxyethyl)ammonium, tri(Cι-C 4 -alkyl) sulfonium, and sulfoxonium ions, preferably tri (Cι-C 4 -alkyl)sulfoxonium. The ammonium ion and the abovementioned substituted ammonium ions are very particularly preferred cations. The compounds I and their N-oxides are understood as meaning the following substructures la to Im: 0© ig Ih li A) : Reaction of a substituted 2-halopyridine with an organometal- lic compound in the presence of a catalyst in an inert sol¬ vent: R 3 II III In this case Hal is chlorine or bromine, Me is Mg-Hal, Zn-Hal, tri-Cι-C 4 -alkyltin, lithium, copper or B(OR 24 ) (OR 25 ) , where R 24 and R 25 are hydrogen or Cι-C 4 -alkyl and Cat. is a transition metal catalyst, in particular a palladium catalyst such as tetra- kis(triphenylphosphine)palladium(0) , bis(1,4-diphenylphos- phino)butanepalladium(II) chloride and bis(triphenylphos¬ phine)palladium(II) chloride, or a nickel catalyst such as nickel (II) acetylacetonate, bis(triphenylphosphine) ickel(II) chloride and bis (1,3-diphenylphosphino)propanenickel(II) chloride. Me is preferably B(OR 24 ) (OR 25 ). Reactions of this type are generally known, for example from the following references: Reactions with boronic acids (Me = B(OR 24 ) (OR 25 )): (1) W.J. Thompson and J. Gaudino, J. Org. Chem. 4 (1984) 5237; (2) S. Gronowitz and K.Lawitz, Chem. Scr. 24. (1984) 5; (3) S. Gronowitz et al., Chem. Scr. 2£ (1986) 305; (4) J. Stavenuiter et al., Heterocycles 2£ (1987) 2711; (5) V. Snieckus et al., Tetrahedron Letters 2S. (1987) 5093; (6) V. Snieckus et al., Tetrahedron Letters 22. (1988) 2135; (7) M.B. Mitchell et al., Tetrahedron Letters 22 (1991) 2273; Tetrahedron 4£ (1992) 8117; (8) JP-A 93/301 870; Reactions with Grignard compounds (Me = Mg-Hal) : (9) L.N. Pridgen, J. Heterocyclic Chem., 12 (1975) 443; (10) M. Kumada et al., Tetrahedron Letters, 21 (1980) 845, ibid 22 (1981) 5319; (ll)A. Minato et al., J. Chem. Soc, Chem. Commun., (1984) 511; - Reactions with organozinc compounds {Me = Zn-Hal}: (12) A.S. Bell et al., Synthesis, (1987) 843; (13) A.S. Bell et al., Tetrahedron Letters, 21 (1988) 5013; (14) J.W. Tilley and S. Zawoiski, J. Org. Chem. 5_2 (1988) 386, see also Ref. (10); Reactions with organotin compounds {Me = Sn(alkyl) 3 } (15) T.R. Bailey et al., Tetrahedron Letters, 21 (1986) 4407; (16) Y. Yamamoto et al., Synthesis, 1986, 564; see also Ref. (6) . B) : For the synthesis of the substituted 2-phenylpyridines la and Ih, appropriate 2-(4-hydroxyphenyl)pyridines VI are expediently used as starting materials. These can be prepared in a manner known per se by electrochemical reaction of 2-halopyridines II with 2, 6-di-tert-butylphenolates V and subsequent acid-catalyzed isobutene elimination (cf. eg. P. Boy et al., Synlett 1991, 923): VI The 2-halopyridine II can also be reacted with a p-metalated phe- nyl-Cι-C 4 -alkyl ether VII, eg. p-methoxybenzeneboronic acid. Acid¬ ic ether cleavage of the 2-(4-alkoxyphenyl)pyridine VIII, eg. with cone, aqueous hydrogen bromide solution, affords in good yield the 2-(4-hydroxyphenyl)pyridine VI: viπ Further reaction of the 2-(4-hydroxyphenyl)pyridine VI to give the substituted 2-phenylpyridines la and Ih is likewise carried out by methods known from the literature, cf. eg.: - R. Tania et al., Synth. Commun. 16 (1986) 681, - EP-A 170 191, - US 4,792,605, - EP-A 448 188. Nitration of VI affords a 2-(4-hydroxy-5-nitrophenyl)pyridine IX whose reduction with Fe/acetic acid or SnCl 2 /hydrochloric acid or H 2 /cat. leads to the 2-(5-amino-4-hydroxyphenyl)pyridine X. Acyla- tion of X with the α-chloroacid chloride XI in the presence of a base leads via the isolatable carboxanilide XII to the compound Ih (where R 6 = hydrogen) : xπ The 2-(4-hydroxy-5-nitrophenyl)pyridines of the formula IX are novel. Also novel are the 2- (5-amino-4-hydroxyphenyl)pyridines X and the carboxanilides XII which can be prepared from them. C) The compounds la and lb where R 6 = hydrogen can likewise be prepared from the 2-(5-amino-4-hydroxyphenyl)pyridines X or from the 2-(5-amino-4-mercaptophenyl)pyridines XIII: The acylation is carried out using a carbonic acid derivative such as phosgene, diphosgene, carbonyldiimidazole, chloroformic acid ester, di-2-pyridyl carbonate, disuccinimid carbonate, S,S-bis(l-phenyl-lH-tetrazol-5-yl) dithiocarbonate or urea. The addition of a base may be advantageous, depending on the aminophenol X or aminothiophenol XIII and carbonic acid deriva- tive employed, suitable bases in particular being inorganic salts, eg. sodium hydrogencarbonate, potassium hydrogencarbonate, sodium carbonate, potassium carbonate, sodium hydroxide, potas¬ sium hydroxide, pyridine or tertiary amines, eg. triethylamine. Reactions of o-aminophenols and o-aminothiophenols with carbonyl derivatives are generally known (see also J. Sam et al., J. Pharm. Sci. ____& (1969), 1043), for example from the following ref¬ erences: Reaction with urea: W.J. Close et al. J. Am. Chem. Soc. 2 (1949), 1265; JP 9048 472;. Reaction with carbonyldiimidazole: R.J. Nachman, J. Hetero¬ cyclic Chem. 1£ (1982), 1545; Reaction with di-2-pyridyl carbonate: S. Kim et al., Hetero- cycles 21 (1986), 1625; - Reaction with S,S'-bis-(l-phenyl-lH-tetrazol-5-yl) dithiocarbonate: K. Takeda et al., Chem. Pharm. Bull. 22 (1989), 2334; Reaction with chloroformic acid ester: R.S. Atkinson et al., J. Chem. Soc. Perkin Trans. 1981, Part 2, No. 3, p. 509; - Reaction with disuccinimido carbonate: K. Takeda et al., Synth. Commun. 12 (1982), 213; - Reaction with phosgene or diphosgene: U.S. 4,420,486; JP-A 60-94973; J. Weinstock et al., J. Med. Chem. 20. (1987) 1166. D) Acylation or alkylation of the compounds la to Ik where R 6 or R 10 is hydrogen, with alkyl halides, sulfuric acid esters, carbonyl chlorides or carboxylic anhydrides leads to further compounds la to Ik, where R 6 or R 10 + hydrogen. This reaction is expediently also carried out in the presence of a base: for the acylation of ben__oxazolin-2-ones with acetic anhydride see W.J. Close et al., J. Am. Chem. Soc. 21 (1949), 1265; for the acylation of benzoxazolin-2-ones with acid chlorides see N. Cotelle et al., Synthetic Co mun. 1£ (1989), 3259; for the alkylation of benzoxazolin-2-ones with alkyl halides see M. Yamato et al., Chem. and Pharm. Bull 21 (1983), 1733; U.S. 4,640,707; K.T. Potts et al., J. Org. Chem. l≤. (1980) 4985; for the acylation of benzothiazolin-2-ones with acetic anhydride see S. Kadoya et al., Chem. Pharm. Bull. 21 (1976), 147; for the acylation of benzothiazolin-2-ones with acid chlorides see JP 62-201 876; for the acylation of benzothiazolin-2-ones with chloroformic acid ester see S. Kadoya et al., Chem. and Pharm. Bull. 24. (1976), 147; for the alkylation of benzothiazolin-2-ones with alkyl halides or sulfuric acid esters see S. Kadoya et al., Chem. and Pharm. Bull. 2 (1976) , 147; JP 62-132 873; JP 62-252 787; U.S. 4,720,297; for the alkylation of benzothiazolin-2-ones by means of Michael addition to acrylic acid esters see U.S. 4,720,297. E) : Conversion of 3-hydroxyphenyl- or 3-mercaptophenylpyridines XIV (cf. DE-A 43 23 916) either to the propargyl ethers or propargyl thioethers XV, which are then subjected to a ther¬ mally induced or Lewis acid-catalyzed Claisen rearrangement: Deproto- nation (R 1S ' is Ci-Cs-alkyl, Cι-C 5 -haloalkyl or Cι-C 4 -alkoxy-Cι-C 3 -alkyl; Y is oxygen or sulfur) or to the β-haloallyl ethers XVI, which are likewise subjected to a thermally induced or Lewis acid-catalyzed Claisen rearrange¬ ment: Deproto- nation Im Both reactions are known in principle, eg. from EP-A 476 697. With respect to the first-mentioned variant, reference may fur- ther be made to H. Ishii et al., Chem. Pharm. Bull. 1Q. (1992) 1148. Reactions of the second variant are additionally known from E.K. Ryu et al.. Bull. Korean Chem. Soc, 12 (1992), 361. F) Reduction of nitrophenyl derivatives XVII to the compounds Ih to Ik where R 6 = hydrogen in a manner known per se (cf. eg. U.S. 4,670,042) : XVII Ih-Ik (R6 = H) (Z is oxygen, sulfur or N-R 7 ) Suitable reductants are, for example, hydrogen (hydrogenation on a customary catalyst) support or iron in acetic acid. G) Reaction of diamines XVIII with halocarbonyl chlorides Cl-CO-C(R 13 , R 14 )-halogen in a manner known per se (cf. eg. JP-A 55-49379) to give the compounds Ik where R 6 , R 7 = hydro- gen: XVIII Ik (R 6 ,R 7 = H) The compounds I can be converted into the N-oxides by customary methods, eg. by reaction with an organic peracid such as metachloroperbenzoic acid. Substituted 2-phenylpyridines I where R 1 , R 3 and/or R 4 are an alkali metal carboxylate radical can be obtained by treating com- pounds I where R 1 , R 3 and/or R 4 = hydroxycarbonyl eg. with sodium hydroxide or potassium hydroxide in aqueous solu¬ tion or in an organic solvent such as methanol, ethanol, ace¬ tone or toluene or with sodium hydride in an organic solvent such as dimethyl¬ formamide. Salt formation normally takes place at an adequate rate even at about 20 * C. The salt can be isolated eg. by precipitating with a suitable in¬ ert solvent or by evaporating the solvent. Substituted 2-phenylpyridines I where R 1 , R 3 and/or R 4 are a car¬ boxylate radical whose counter-ion is an agriculturally utiliz¬ able cation which does not belong to the alkali metal group can customarily be prepared by double decomposition of the cor¬ responding alkali metal carboxylates. Compounds I where R 1 , R 3 and/or R 4 are a carboxylate radical whose counter-ion is eg. a zinc, iron, calcium or magnesium ion can be prepared from the corresponding sodium carboxylates in the cus¬ tomary manner, also compounds I where R 1 , R 3 and/or R 4 are a car- boxylate radical whose counter-ion is an ammonium ion, by means of ammonia. If not stated otherwise, all reactions described above are expe¬ diently performed at atmospheric pressure or under the autogenous pressure of the respective reaction mixture. The substituted 2-phenylpyridines I can be obtained during prepa¬ ration as isomer mixtures which, however, can be separated if de¬ sired into the pure isomers by the methods customary for this purpose such as crystallization or chromatography, alternatively on an optically active adsorbate. Pure optically active isomers can advantageously be prepared from corresponding optically active starting materials. The substituted 2-phenylpyridines I, their agriculturally utiliz¬ able salts and N-oxides are suitable as herbicides, both as iso¬ mer mixtures and in the form of the pure isomers. They can con¬ trol broad-leaved weeds and grass weeds very effectively in crops such as wheat, rice, maize, soyabeans and cotton without signifi- cantly damaging the crop plants. This effect occurs especially at low application rates. Depending on the particular application method, the compounds I or herbicidal compositions containing them can additionally be employed in a further number of crop plants for eliminating un- desired plants. Examples of suitable crops are the following: Allium cepa, Ananas comosus, Arachis hypogaea, Asparagus officinalis, Beta vulgaris spp. altissima, Beta vulgaris spp. rapa, Brassica napus var. napus, Brassica napus var. napobrassica, Brassica rapa var. silvestris, Camellia sinensis, Carthamus tinctorius, Carya illinoinensis, Citrus limon, Citrus sinensis, Coffea arabica (Coffea canephora, Coffea liberica) , Cucumis sativus, Cynodon dactylon, Daucus carota, Elaeis guineensis, Fragaria vesca, Glycine max, Gossypium hirsutum, (Gossypium arboreu , Gossypium herbaceum, Gossypium vitifolium) , Helianthus annuus, Hevea brasiliensis, Hordeum vulgare, Humulus lupulus, Ipomoea batatas, Juglans regia, Lens culinaris, Linum usitatissimum, Lycopersicon lycopersicum, Malus spp., Manihot esculenta, Medicago sativa, Musa spp., Nicotiana tabacum (N.ru¬ stica) , Olea europaea, Oryza sativa , Phaseolus lunatus, Phaseolus vulgaris, Picea abies, Pinus spp., Pisum sativum, Prunus avium, Prunus persica, Pyrus communis, Ribes sylvestris, Ricinus communis, Saccharum officinarum, Secale cereale, Solanum tuberosum, Sorghum bicolor (s. vulgare), Theobroma cacao, Trifo- lium pratense, Triticum aestivum, Triticum durum, Vicia faba, Vitis vinifera and Zea mays. Moreover, the compounds I, their N-oxides and/or salts can be employed in crops which have been made largely resistant to the action of I by breeding and/or by means of genetic engineering methods. In addition, the substituted 2-phenylpyridines I are also suit¬ able for the desiccation and/or defoliation of plants. As desic¬ cants, they are suitable in particular for the desiccation of the above-ground parts of crop plants such as potato, rape, sunflower and soybean. A completely mechanized harvesting of these impor¬ tant crop plants is thus made possible. Additionally of economic interest is the facilitation of harvest- ing, which is made possible by the temporally concentrated drop¬ ping or reduction of the power of adhesion to the tree in the case of citrus fruits, olives or other varieties and types of po- maceous fruit, stone fruit and hard-shell dry fruit. The same mechanism, ie. the promotion of the formation of separating tissue between the fruit or leaf and stem part of the plant is also essential for a highly controllable defoliation of useful plants, in particular cotton. Additionally, the shortening of the time interval in which the individual cotton plants become ripe leads to an enhanced fiber quality after harvesting. The active compounds can be applied by spraying, nebulizing, atomizing, scattering or watering, as such, in the form of their formulations or the application forms prepared therefrom, eg. in the form of directly sprayable solutions, powders, suspensions or dispersions, emulsions, oil dispersions, pastes, dusting composi¬ tions, scattering compositions or granules. The application forms depend entirely on the intended use; in any case if possible they should ensure the finest dispersion of the active compounds ac¬ cording to the invention. The formulations are prepared in a known manner, eg. by extending the active compound with solvents and/or carriers, if desired using emulsifiers and dispersants, it also being possible to use other organic solvents as auxiliary solvents if water is used as a diluent. Suitable inert auxiliaries for this purpose are essentially: mineral oil fractions of medium to high boiling point such as kerosene and diesel oil, and also coal tar oils and oils of vege- table or animal origin, solvents such as aromatics (eg. toluene, xylene) , chlorinated aromatics (eg. chlorobenzenes) , paraffins (eg. petroleum fractions) , alcohols (eg. methanol, ethanol, buta- nol, cyclohexanol) , ketones (eg. cyclohexanone, isophorone) , amines (eg. ethanolamine, N,N-dimethylformamide, N-methylpyrroli- done) and water; carriers such as ground natural minerals (eg. kaolins, clays, talc, chalk) and ground synthetic minerals (eg. highly disperse silicic acid, silicates); emulsifiers such as nonionic and anionic emulsifiers (eg. polyoxyethylene fatty alco¬ hol ethers, alkylsulfonates and arylsulfonates) and dispersants such as lignin-sulfite waste liquors and methylcellulose. Aqueous application forms can be prepared from emulsion concen¬ trates, dispersions, pastes, wettable powders or water-dis- persible granules by addition of water. For the preparation of emulsions, pastes or oil dispersions, the substrates can be ho¬ mogenized, as such or dissolved in an oil or solvent, by means of wetting agents, adhesives, dispersants or emulsifiers. However, concentrates also consisting of active substance, wetting agent, adhesive, dispersant or emulsifier and possibly solvent or oil can be prepared which are suitable for dilution with water. Suitable surface-active substances are the alkali metal, alkaline earth metal or ammonium salts of aromatic sulfonic acids, eg. lignosulfonic acid, phenolsulfonic acid, naphthalenesulfonic acid and dibutylnaphthalenesulfonic acid, and also of fatty acids, al¬ kylsulfonates and alkylarylsulfonates, alkyl, lauryl ether and fatty alcohol sulfates, and also salts of sulfated hexa-, hepta- and octadecanols, and also of fatty alcohol glycol ethers, con¬ densation products of sulfonated naphthalene and its derivatives with formaldehyde, condensation products of naphthalene or of napthalenesulfonic acids with phenol and formaldehyde, poly- oxyethylene octyl phenol ether, ethoxylated isooctyl-, octyl- or nonylphenol, alk lphenol or tributyIphenyl polyglycol ether, alkylaryl polyether alcohols, isotridecyl alcohol, fatty alcohol ethylene oxide condensates, ethoxylated castor oil, poly- oxyethylene alkyl ethers or polyoxypropylene, lauryl alcohol polyglycol ether acetate, sorbitan esters, lignin-sulfite waste liquors or methylcellulose. Powdered, scattering and dusting compositions can be prepared by mixing or joint grinding of the active substances with a solid carrier. Granules, eg. coated, impregnated and homogeneous granules, can be prepared by binding the active compounds to solid carriers. Solid carriers are mineral earths such as silicic acids, silica gels, silicates, talc, kaolin, limestone, lime, chalk, bole, loess, clay, dolomite, diatomaceous earth, calcium sulfate and magnesium sulfate, magnesium oxide, ground plastics, fertilizers, such as ammonium sulfate, ammonium phosphate, ammonium nitrate, ureas and vegetable products, such as cereal meal, tree bark, wood and nutshell meal, cellulose powder or other solid carriers. The concentration of the active compounds I in the ready-to-apply preparations can be varied within wide ranges, for example be¬ tween 0.01 and 95% by weight. The active compounds are in this case normally employed in a purity of 90% to 100%, preferably 95% to 100% (according to NMR spectrum) . Examples of such preparations are: I. 20 parts by weight of the compound No. la.01 are dissolved in a mixture which consists of 80 parts by weight of alkylated benzene, 10 parts by weight of the addition product of from 8 to 10 mol of ethylene oxide to 1 mol of oleic acid N-mono- ethanolamide, 5 parts by weight of calcium salt of dodecyl- benzenesulfonic acid and 5 parts by weight of the addition product of 40 mol of ethylene oxide to 1 mol of castor oil. By pouring out the solution and finely dispersing it in 100,000 parts by weight of water an aqueous dispersion is ob- tained which contains 0.02% by weight of the active compound. II. 20 parts by weight of the compound No. Ic.Ol are dissolved in a mixture which consists of 40 parts by weight of cyclohexa- none, 30 parts by weight of isobutanol, 20 parts by weight of the addition product of 7 mol of ethylene oxide to 1 mol of isooctylphenol and 10 parts by weight of the addition product of 40 mol of ethylene oxide to 1 mol of castor oil. By pour¬ ing the solution into 100,000 parts by weight of water and finely dispersing it an aqueous dispersion is obtained which contains 0.02% by weight of the active compound. III.20 parts by weight of the active compound No. Id.01 are dis¬ solved in a mixture which consists of 25 parts by weight of cyclohexanone, 65 parts by weight of a mineral oil fraction of boiling point 210 to 280"C and 10 parts by weight of the addition product of 40 mol of ethylene oxide to 1 mol of castor oil. By pouring the solution into 100,000 parts by weight of water and finely dispersing it an aqueous disper¬ sion is obtained which contains 0.02% by weight of the active compound. IV. 20 parts by weight of the active compound No. Ig.01 are well mixed with 3 parts by weight of the sodium salt of diiso- butylnaphthalene-α-sulfonic acid, 17 parts by weight of the sodium salt of a lignosulfonic acid from a sulfite waste liquor and 60 parts by weight of powdered silicic acid gel and ground in a hammer mill. By finely dispersing the mixture in 20,000 parts by weight of water a spray liquor is obtained which contains 0.1% by weight of the active compound. V. 3 parts by weight of the active compound No. Ih.OOl are mixed with 97 parts by weight of finely divided kaolin. In this manner a dusting composition is obtained which contains 3% by weight of the active compound. VI. 20 parts by weight of the active compound No. Im.Ol are intimately mixed with 2 parts by weight of calcium salt of dodecylbenzenesulfonic acid, 8 parts by weight of fatty alcohol polyglycol ether, 2 parts by weight of sodium salt of a phenol/urea/formaldehyde condensate and 68 parts by weight of a paraffinic mineral oil. A stable oily dispersion is obtained. The application of the active compounds or of the herbicidal and plant growth-regulating agents can be carried out pre-emergence or post-emergence. Normally, the plants are sprayed or dusted with the active compounds or the seeds of the test plants are treated with the active compounds. If the active compounds are less tolerable to certain crop plants, application techniques can be used in which the herbicidal compositions are sprayed with the aid of the spray equipment such that the leaves of the sensitive crop plants are not affected if possible, while the active com- pounds reach the leaves of undesired plants growing under them or the uncovered soil surface (post-directed, lay—by) . The application rate of active compound can be varied depending on the control target, time of year and growth stage. When used as herbicides or as defoliating agents, the application rate is preferably from 0.001 to 3.0, in particular from 0.01 to 1.0, kg/ha of active substance (a.s.). To widen the spectrum of action and to achieve synergistic effects, the substituted 2-phenylpyridines I can be mixed with numerous representatives of other herbicidal or growth-regulating active compound groups and applied together. For example, suit¬ able mixture components are diazines, 4H—3, 1—benzoxazine derivatives, benzothiadiazinones, 2,6—dinitroanilines, N-phenyl- carbamates, thiocarbamates, halocarboxylic acids, triazines, amides, ureas, diphenyl ethers, triazinones, uracils, benzofuran derivatives, cyclohexane-l,3-dione derivatives which carry eg. a carboxyl or carbimino group in the 2—position, quinoline- carboxylic acid derivatives, imidazolinones, sulfonamides, sul- fonylureas, aryloxy— or heteroaryloxyphenoxypropionic acids and their salts, esters and amides and others. Additionally, it may be useful to apply the compounds I on their own or jointly in combination with other herbicides and addition- ally with other crop protection agents, for example with composi¬ tions for controlling pests or phytopathogenic fungi or bacteria. Also of interest is the miscibility with mineral salt solutions, which are employed for eliminating nutritional and trace element deficiencies. Non-phytotoxic oils and oil concentrates can also be added. Preparation Examples Example 1 6-[3-Chloro-5-trifluoromethylpyridin-2-yl]-4-propargyl- 2H-1,4-benzoxazin-3-one (Table 5, Compound no. Ih.OOl) Preparation was carried out according to the following reaction scheme: 1st stage of reaction: 3-Chloro-2-(4-methoxyphenyl)-5-trifluoromethylpyridine 20.4 g of 2,3-dichloro-5-trifluoromethylpyridine, 18.9 g of p-me- thoxyphenylboronic acid, 0.4 g of tetrakis(triphenylphos¬ phine)palladium(O) and 23.8 g of sodium hydrogencarbonate were refluxed for 2 hours in a mixture of 300 ml of tetrahydrofuran and 300 ml of water. After colling, the mixture was acidified by means of 10% strength hydrochloric acid. The tetrahydrofuran was removed by distillation under reduced pressure, and the product was then extracted three times with 100 ml of methylene chloride in each case. The combined organic phases were sucked through silica gel and then evaporated. Recrystallization of the crude product from n-hexane gave 19.5 g (72%) of colorless crystals; m.p. 71-72°C. 2nd stage of reaction: 3-Chloro-2-(4-hydroxyphenyl)-5-trifluoromethylpyridine A suspension of 10.0 g (34.8 mmol) of 3-chloro-2-(4-methoxy- phenyl)-5-trifluoromethylpyridine in 50 ml of 47% strength hydro¬ bromic acid was heated at reflux temperature for two hours. After cooling, the reaction mixture was diluted with 200 ml of water. After cooling for a few hours, the resulting crystals were sepa- rated off, washed with water and dried under reduced pressure. Yield: 8.0 g (84%) of colorless crystals. iH-NMR (270 MHz, in CDC1 3 ) : δ [ppm] = 6.79 (d,2H), 6.8-7.6(br.,IH) , 7.62(d,2H), 8.08(s,lH), 8.82(s,lH). 3rd stage of reaction: 3-Chloro-2-(4-hydroxy-3-nitrophenyl)-5-trifluoromethylpyridine The nitration was carried out according to the working procedure of R. Tapia et al., Synth. Commun. 1£ (1986) 681: A mixture of 8.0 g (29.3 mmol) of 3-chloro-2-(4-hydroxyphe- nyl)-5-trifluoromethylpyridine, 7.1 g (29.3 mmol) of HN0 3 /Si0 2 (HNO 3 content about 26%) and 200 ml of methylene chloride was stirred at 20-25 β C for about 15 hours. The Si0 2 was filtered off with suction and washed with methylene chloride. After evaporat¬ ing the combined methylene chloride phases, the oily residue was purified by chromatography on silica gel (eluent: cyclohexane/ ethyl acetate 6:1). Yield: 9.0 g (96%) of colorless crystals of m.p. : 62-63'C. iH-N R (250 MHz, in CDCI 3 ) : δ [ppm] = 7.29(d,lH), 8.08(s,lH), 8.10(dd,lH), 8.68(d,lH), 8.88(s,lH), 10.80 (s,br. ,IH) . 4th stage of reaction: 3-Chloro-2-(3-amino-4-hydroxyphenyl)-5-trifluoromethylpyridine 6.2 g (110 mmol) of iron powder were heated to reflux temperature in a mixture of 66 ml of methanol and 33 ml of glacial acetic acid and treated in portions with a total of 11.7 g (36.7 mmol) of 3-chloro-2-(4-hydroxy-3-nitrophenyl)-5-trifluoromethylpyri¬ dine. After addition was complete, the mixture was heated for a further 2 hours at reflux temperature, allowed to cool and diluted with 130 ml of ethyl acetate. The solid components were separated off, washed with ethyl acetate and discarded. The fil¬ trate was treated with water so that two phases were formed. The 5 aqueous phase was separated off and extracted twice with ethyl acetate. The combined organic phases were washed with water, dried over sodium sulfate and filtered through silica gel. Yield: 7.8 g (74%) of a dark oil. 0 i -H-NMR (250 MHz, in d 6 -dimethyl sulfoxide) : δ [ppm] = 4.75(s,br.,2H) , 6.77(d,lH), 6.92(dd,lH), 7.08(d,lH), 8.47(s,lH), 8.98(s,lH), 9.65(s,br.,lH) . 5th stage of reaction: 15 3-Chloro-2-[3-(2-chloroacetylamino)-4-hydroxyphenyl]-5-trifluoro¬ methylpyridine 3.8 g (33.3 mmol) of chloroacetyl chloride were added dropwise at 0"C to a mixture of 7.4 g (25.6 mmol) of 3-chloro-2-(3-amino- 20 4-hydroxyphenyl)-5-trifluoromethylpyridine and 2.1 g (15.4 mmol) of potassium carbonate in 100 ml of anhydrous dimethylformamide. After stirring at 90°C for three hours, the reaction mixture was allowed to cool and then poured into 500 ml of water. The solid portion was filtered off with suction, washed with water and 25 dried under reduced pressure. Yield: 7.3 g (87%) of colorless crystals of m.p.: 205 C. i H- MR (250 MHz, in d 6 -dimethyl sulfoxide): δ [ppm] = 4.44 (s,2H), 7.04(d,lH), 7.49(dd,lH), 8.50(m,2H), 9.00(s,lH), 9.62(s,lH), 30 10.67(s,lH) . 6th stage of reaction: 6-[3-Chloro-5-trifluoromethylpyridin-2-yl]-4-propargyl- 2H-1,4-benzoxazin-3-one 35 A solution of 3.6 g (11.0 mmol) of 3-chloro-2-[3-(2-chloro- acetylamino)-4-hydroxyphenyl]-5-trifluoromethylpyridine in 50 ml of anhydrous dimethylformamide was added dropwise at 0 * C to a suspension of 0.4 g (12 mmol) of sodium hydride (80% strength in 40 mineral oil) which had been freed of mineral oil and 50 ml of an¬ hydrous dimethylformamide. After stirring for 15 minutes, 1.3 g (11.0 mmol) of propargyl bromide were added dropwise to this mix¬ ture. The reaction mixture was then slowly allowed to warm to about 20 β C room temperature, stirred for a further three hours and 45 then poured into 500 ml of ice water. The aqueous phase was extracted three times with 200 ml of ethyl acetate each time. The combined organic phases were washed twice with a little water, dried over sodium sulfate and then concentrated. Chromatographic purification of the residue on silica gel (eluent: cyclohexane/ ethyl acetate 4:1) gave 1.9 g (47%) of colorless crystals of m.p.: 136-137 β C. !H-NMR (250 MHz, in CDC1 3 ) : δ [ppm] = 2.25(t,lH), 4.70 (s,2H), 4.74(d,2H), 7.13(d,lH), 7.54(dd,lH), 7.68(d,lH), 8.07(s,lH), 8.85(S,1H) . Example 2 6-[3-Chloro-5-trifluoromethylpyridin-2-yl]-4-allyl- 2H-l,4-benzoxazin-3-one (Table 5, Compound no. Ih.002) In a similar manner to the preparation of 6-[3-chloro-5—tri- fluoromethylpyridin-2-yl]-4-propargy1-2H-1,4-benzoxazin-3-one described above, use of 3.4 g (10.4 mmol) of 3—chloro- 2-[3-(2-chloroacetylamino)-4-hydroxyphenyl]-5-trifluoromethyl¬ pyridine, 0.7 g (23 mmol) of 80% strength sodium hydride suspen¬ sion, 1.4 g (11.4 mmol) of allyl bromide and a total of 100 ml of anhydrous dimethylformamide gave, after chromatography of the crude product on silica gel (eluent: cyclohexane/ethyl acetate 6:1), 1.5 g (39%) of colorless crystals of m.p.: 132-134'C. ! H-NMR (270 MHz, in CDC1 3 ): δ [ppm] = 4.57 (d,2H), 4.72 (s,2H), 5.19-5.28(m,2H) , 5.80-5.98(m,IH) , 7.10(d,lH), 7.45(d,lH), 7.47(dd,lH), 8.04(s,lH), 8.82(s,lH). Example 3 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -1- (1-methylethyl)benz- imidazol-2-one (Table 3, Compound no. Ic.Ol) Preparation was carried out according to the following reaction scheme: CH(CH 3 ) 2 CH ( CH 3 ) 2 Carbonyldi¬ imidazole 1st stage of process: 3-Chloro-2- (4-fluorophenyl) -5-trifluoro¬ methylpyridine In a similar manner to the preparation of 3-chloro-2- (4-methoxy- phenyl)-5-trifluoromethylpyridine described above, use of 55.0 g of 2,3-dichloro-5-trifluoromethylpyridine, 35.6 g of 4-fluoro- phenylboronic acid, 1.0 g of tetrakistriphenylphosphinepalladium, 64.2 g of sodium hydrogen carbonate, 300 ml of dimethoxyethane and 500 ml of water gave 65.0 g (93%) of colorless crystals of m.p.: 41-42 β C. 2nd stage of process: 3-Chloro-2-(4-fluoro-3-nitrophenyl)-5-trifluoromethylpyridine 40.8 g of 100% nitric acid were added dropwise at from 0 to 5°C to 5 a solution of 118.9 g of 3-chloro-2-(4-fluorophenyl)-5-trifluoro¬ methylpyridine in 563 ml of 96% sulfuric acid, and the mixture was then stirred at from 0 to 5°C for 1 1/2 hours. For work-up, the reaction mixture was poured into 2 1 of ice water, and the product was then extracted with ethyl acetate (3 x 300 ml) . The 10 combined organic phases were washed twice with 100 ml of water in each case, dried over sodium sulfate and then evaporated. Yield: 134.5 g (97%) of a colorless oil which crystallized slowly. iH-NMR (250 MHz, in CDC1 3 ) : δ [ppm] - 7.47 (t,lH), 8.09-8.19(m,2H) , 15 8.60(dd,lH), 8.89(s,lH). 3rd stage of process: 3-Chloro-2-[4-(1-methylethylamino) -3-nitrophenyl]-5-trifluorome¬ thylpyridine 20 44.0 g of 3-chloro-2-(4-fluoro-3-nitrophenyl)-5-trifluoromethyl¬ pyridine in 250 ml of isopropylamine were stirred at 23 * C for six hours. The reaction mixture was then concentrated. The resi¬ due was stirred with 100 ml of water, after which the residual 25 solid portion was separated off, washed with water and dried in a vacuum drying oven. Yield: 48.2 g (98%) of colorless crystals; m.p.: 107-109 β C. 4th stage of process: 30 2-[3-Amino-4-(l-methylethylamino)phenyl]-3-chloro-5-trifluoro¬ methylpyridine In a similar manner to the preparation of 3-chloro-2-(3-amino- 4-hydroxyphenyl)-5-trifluoromethylpyridine described above, 35 46.1 g of 3-chloro-2-[4-(1-methylethylamino)-3-nitro- phenyl]-5-trifluoromethylpyridine and 21.5 g of iron powder gave 39.1 g (93%) of colorless crystals; m.p.: 116-117 β C. 5th stage of process: 40 5- (3-Chloro-5-trifluorometh lpyridin-2-yl)-1-(1-methylethyl)- benzimidazol-2-one 37.4 g of 2-[3-amino-4-(1-methylethylamino)-phenyl]-3-chloro- 5-trifluoromethylpyridine and 27.6 g of carbonyldiimidazole were 5 heated at reflux temperature for four hours in 200 ml of anhydrous tetrahydrofuran, after which the reaction mixture was concentrated. The residue was treated with 100 ml of 10% strength hydrochloric acid and the mixture was extracted three times with 100 ml of methylene chloride each time. The combined organic phases were washed twice with 50 ml of water each time, dried over sodium sulfate and concentrated. The crude product was stirred with ether, then separated off and dried. Yield: 29.8 g (74%) of colorless crystals; m.p.: 192-193'C. Example 4 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -3-methyl-1- (1-methy1- ethyl)benzimidazol-2-one (Table 3, Compound no. Ic.02) 0.23 g of an 80% strength by weight suspension of sodium hydride in mineral oil was added at 23 * C to 25 ml of anhydrous dimethyl¬ formamide. The mixture was then treated dropwise with a solution of 2.50 g of 5- (3-chloro-5-trifluoromethylpyridin-2-yl) - 1- (1-methylethyl)benzimidazol-2-one in 25 ml of dimethylformamide and, after stirring for 15 minutes, with 1.05 g of methyl iodide. After stirring for 6 hours, the reaction mixture was poured into 300 ml of ice water. The aqueous phase was extracted three times with 100 ml of tert-butyl methyl ether each time, after which the combined organic phases were washed twice with 50 ml of water each time, dried over sodium sulfate and concentrated. Chromatography on silica gel using cyclohexane/ethyl acetate (4:1) as the eluent gave 2.1 g of colorless crystals. Yield: 75%; m.p.: 108-109'C. Example 5 5- (3-Chloro-5-trifluoromethylpyridin-2-yl)-1- (1-methylethyl)- 3- (2-propynyl)benzimidazol-2-one (Table 3, Compound no. Ic.06) In a similar manner to the preparation of 5- (3-chloro-5-tri- fluoromethylpyridin-2-yl)-3-methyl-l-(1-methylethyl) enzimidazol- 2-one described above, 2.5 g of 5- (3-chloro-5-trifluoromethyl- pyridin-2-yl)-l- (1-methylethyl)benzimidazol-2-one and 0.9 g of propargyl bromide gave, after chromatography on silica gel, 1.3 g (47%) of colorless crystals. Yield: 47%; m.p.: 109-lll'c. Example 6 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -3-cyanomethyl- 1- (1-methylethyl)benzimidazol-2-one (Table 3, Compound no. Ic.lO) In a similar manner to the preparation of 5-(3-chloro-5-tri- fluoromethylpyridin-2-yl)-3-methyl-l- (1-methylethyl)benzimidazol- 2-one described above, 2.5 g of 5- (3-chloro-5-trifluoromethy1- pyridin-2-yl)-l- (1-methylethyl)benzimidazol-2-one and 0.9 g of bromoacetonitrile gave, after chromatography on silica gel, 1.4 g of colorless crystals. Yield: 50%; m.p.: 158-159 * C. Example 7 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -3- (2,3-epoxypropyl)- 1- (1-methylethyl)benzimidazol-2-one (Table 3, Compound no. Ic.07) In a similar manner to the preparation of 5-(3-chloro- 5-trifluoromethylpyridin-2-yl) -3-methyl-l- (1-methylethyl) benzimidazol-2-one described above, 2.5 g of 5- (3-chloro-5-trifluoromethyl-pyridin-2-yl)-1- (1-methylethyl)ben- zimidazol-2-one and 1.0 g of epibromohydrin gave 2.4 g of color¬ less crystals. Yield: 83%; m.p.: 110-111 * C. Example 8 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -3-ethoxycarbonyl- methyl-1- (l-methylethyl)benzimidazol-2-one (Table 3, Compound no. Ic.08) In a similar manner to the preparation of 5- (3-chloro-5-tri- fluoromethylpyridin-2-yl)-3-methyl-l-(1-methylethyl)benzimida- zol-2-one described above, 2.5 g of 5-(3-chloro-5-trifluorome- thyl-pyridin-2-yl) -1- (1-methylethyl)benzimidazol-2-one and 1.23 g of ethyl bromoacetate gave 2.1 g (68%) of colorless crystals. Yield: 68%, m.p.: 125-127 * C. Example 9 7- (3-Chloro-5-trifluoromethylpyridin-2-yl)-1,2,3,4-tetrahydro- 4-methylquinoxalin-2-one (Table 7, Compound Ik.12) Preparation was carried out according to the following reaction scheme: 1st stage of process: 3-Chloro-2-[4- (1-hydroxycarbonylmethyl-l-methylamino)-3-nitro- phenyl]-5-trifluoromethylpyridine A solution of 5.0 g of 3-chloro-2- (4-fluoro-3-nitrophenyl) -5-tri- fluoromethylpyridine, 1.4 g of sarcosine and 1.73 g of triethyl- amine in 50 ml of acetonitrile was stirred at 23 * C for 3 days and then at reflux temperature for a further four hours. The mixture was then concentrated to dryness. The residue was taken up in 100 ml of ethyl acetate, after which the organic phase was washed twice with 30 ml of water each time, dried over sodium sulfate and concentrated. The crude product was stirred in n—hexane, then filtered off and dried. Yield: 4.7 g (77%) of colorless crystals. ! H-NMR (250 MHz, in d 6 -dimethyl sulfoxide): δ [ppm] = 2.90 (s,3H), 4.13(s,2H), 7.20(d,lH), 7.98(dd,lH), 8.27(d,lH), 8.58(s,lH), 9.03 (S,1H) , 13.0(S,1H) . 2nd stage of process: 7- (3-Chloro-5-trifluoromethylpyridin-2-y1) -1,2,3,4-tetrahydro- 4-methylquinoxalin-2-one 3.9 g of iron powder were heated to reflux temperature in a mixture of 42 ml of methanol and 21 ml of glacial acetic acid and treated in portions with a total of 9.1 g of 3-chloro- 2-[4- (1-hydroxycarbonylmethyl-l-methylamino) -3-nitrophenyl]- 5-trifluoromethylpyridine. After addition was complete, the mixture was stirred for a further two hours at reflux temperature then cooled and diluted with 100 ml of ethyl acetate. The solid portion was separated off, washed with ethyl acetate and dis- carded. The filtrate was treated with water so that two phases were formed. The aqueous phase was separated off and extracted twice with ethyl acetate. The combined organic phases were finally washed with water, dried over sodium sulfate and filtered through silica gel. Yield: 6.7 g (84%) of a colorless solid. 3-H-NMR (270 MHz, in CDC1 3 ): δ [ppm] = 2.93 (s,3H), 3.90 (s,2H), 6.74(d,lH), 7.30(d,lH), 7.53 (dd,IH) , 7.99(s,lH), 8.79(s,lH), 9.42(s,lH) . Example 10 7- (3-Chloro-5-trifluoromethylpyridin-2-yl) -1,2,3,4-tetrahydro- 4-methyl-l- (2-propyn-l-yl)quinoxalin-2-one (Table 7, Compound No. Ik.01) A solution of 2.0 g of 7- (3-chloro-5-trifluoromethylpyridin- 2-yl)-l,2,3,4-tetrahydro-4-methylquinoxalin-2-one in 35 ml of dimethylformamide was added dropwise to a suspension of 0.2 g of 80% strength by weight sodium hydride in 35 ml of anhydrous dimethylformamide. After stirring for 15 minutes, 0.73 g of pro¬ pargyl bromide was added to the reaction mixture. After 18 hours at 23 β C, the reaction mixture was poured into 300 ml of ice water and extracted three times with 100 ml of tert-butyl methyl ether each time, after which the combined organic phases were washed twice with 100 ml of water each time, dried over sodium sulfate and concentrated. Purification of the crude product was carried out by means of chromatography on silica gel (eluent: cyclo- hexane/ethyl acetate) . Yield: 1.1 g (49%) of colorless crystals; m.p.: 128-129 β C. Example 11 6- (3-Chloro-5-trifluoromethylpyridin-2-yl)-2-isopropoxyquinoxa- line and 7- (3-chloro-5-trifluoromethylpyridin-2-yl) -2-isopropoxyquinoxa- line Preparation was carried out according to the following reaction scheme: 45 1st stage of process: 2-(4-Amino-3-nitrophenyl)-3-chloro-5-trifluoromethylpyridine A solution of 50.0 g of 3-chloro-2-(4-fluoro-3-nitrophenyl)- 5-trifluoromethylpyridine in 200 ml of tetrahydrofuran was treated with 200 g of a 25% strength by weight aqueous ammonia solution. After stirring at 23 P C for three days, the tetrahydro¬ furan was removed by distillation, whereupon the product crystal¬ lized. The crystals were separated off, washed with water and dried in a vacuum drying oven. Yield: 48.7 g (98%) of colorless crystals; m.p. : 126—127 * C. 2nd stage of process: 2- (3,4-Diaminophenyl)-3-chloro-5-trifluoromethylpyridine In a similar manner to the preparation of 3-chloro-2- (3-amino- 4-hydroxyphenyl)-5-trifluoromethylpyridine described above, use of 48.7 g of 2- (4-amino-3-nitrophenyl)-3-chloro-5-trifluoro¬ methylpyridine, 25.7 g of iron powder, 276 ml of methanol and 138 ml of glacial acetic acid gave, after final stirring in a little ether, 31.4 g of colorless crystals. Yield: 71%. iH- MR (270 MHz, in d 6 -dimethyl sulfoxide): δ [ppm] = 4.67 (s,2H), 5.04(s,2H), 6.60(d,lH), 7.01(dd,lH), 7.10(d,lH), 8.38(s,lH), 8.90(s,lH) . 3rd stage of process: 6- (3-Chloro-5-trifluoromethylpyridin-2-yl)-1,2-dihydro- quinoxalin-2-one and 7- (3-chloro-5-trifluoromethylpyridin-2-yl)-1,2-dihydro- quinoxalin-2-one A mixture of 10.0 g of 2- (3,4-diaminophenyl)-3-chloro-5-tri- fluoromethylpyridine, 5.7 g of a 50% strength by weight aqueous glyoxalic acid solution, 100 ml of ethanol and 50 ml of glacial acetic acid was stirred at 23 β C for 2.5 hours. The solid portion formed was separated off, washed with ethanol and dried. After concentrating, the filtrate gave a further amount of the prod¬ ucts. Total yield: 87% (9.9 g of colorless crystals); isomeric ratio according to iH- MR = about 1:1). - j -H-NMR (270 MHz, in d 6 -dimethyl sulfoxide): δ [ppm] = 7.46(d,lH), 7.62-7.70(m,2H), 7.89-7.99 (m,2H) , 8.18-8.28(m,3H) , 8.62(s,lH), 8.67(s,lH), 9.07(S,1H), 9.10(S,1H), 12.7(s,2H). 4th process step: 6- (3-Chloro-5-trifluoromethylpyridin-2-yl) -2-isopropoxy- quinoxaline and 7- (3-chloro-5-trifluoromethylpyridin-2-yl)-2-isopropoxy- quinoxaline A solution of 9.9 g of the mixture of 6- (3-chloro-5-trifluoro¬ methylpyridin-2-yl)-l,2-dihydroquinoxalin-2-one and 7-(3-chloro- 5-trifluoromethylpyridin-2-yl)-1,2-dihydroquinoxalin-2-one obtained in the 3rd process step in 200 ml of dimethylformamide was added dropwise to a suspension of 1.2 g of sodium hydride in 50 ml of dimethylformamide. After stirring for 15 minutes, 8.0 g of isopropyl iodide were added to the mixture. The reaction mix¬ ture was then stirred at 80"C for 6 hours and at 23 * C for 64 hours. After cautious addition of 500 ml of water the mixture was extracted three times with 200 ml of tert-butyl methyl ether each time, after which the combined organic phases were washed twice with 200 ml of water each time, dried over sodium sulfate and concentrated. The residue was then chromatographed on silica gel using eyelohexane/ethyl acetate (98:2). Both products were recrystallized from n—hexane. Fraction 1: 1.3 g of colorless crystals; m.p.: 92—93 * C. J -H-NMR (270 MHz, in CDC1 3 ) : δ [ppm] = 1.45(d,6H), 5.56{h,lH), 7.91(d,lH), 8.04-8.09(m,2H), 8.45-8.49 (m,2H) , 8.09(s,lH). This compound was allocated the first-mentioned structure in the heading. Fraction 2: 0.9 g of colorless crystals; m.p.: 99—lOO'C. ! H-NMR (270 MHz, in CDC1 3 ): δ [ppm] = 1.45(d,6H), 5.56(h,lH), 7.92(dd,lH), 8.10-8.13(m,2H) , 8.25(d,lH), 8.48(s,lH), 8.91(s,lH) . This compound was allocated the second-mentioned structure in the heading. Example 12 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -2-ethoxycarbonyl- methylbenzotriazole (Table 12, Compound no. Ig.01) , 6- {3-chloro-5-trifluoromethylpyridin-2-yl) -1-ethoxycarbonyl- methylbenzotriazole and (Table 13, Compound no. Ie.01) and 5- (3-chloro-5-trifluoromethylpyridin-2-yl) -1-ethoxycarbonyl- methylbenzotriazole (Table 11, Compound no. If.03) Preparation was carried out according to the following reaction scheme: 1st stage of reaction: 5- (3-Chloro-5-trifluoromethylpyridin-2-yl)benzotriazole 8 ml of concentrated hydrochloric acid and a solution of 2.64 g of sodium nitrite in 8 ml of water were added dropwise in succes¬ sion with stirring and ice cooling at from 0 to 5 * C to a solution of 10.0 g of 2- (3,4-diaminophenyl) -3-chloro-5-trifluoromethylpy¬ ridine in 100 ml of glacial acetic acid. After addition was com¬ plete, the reaction mixture was allowed to warm to about 23 * C, stirred for a further 30 minutes and then treated with 300 ml of water. The crystals formed were separated off, washed with water and dried under reduced pressure. Yield: 8.8 g of colorless crys¬ tals. i H- MR (270 MHz, in d 6 -dimethyl sulfoxide): δ [ppm] = 7.80(d,lH), 8.06(d,lH), 8.34(s,lH), 8.67(s,lH), 9.08(s,lH), 16(s,br.). 2nd stage of reaction: 5- (3-Chloro-5-trifluoromethylpyridin-2-yl) -2-ethoxycarbonyl- methylbenzotriazole, 6- (3-chloro-5-trifluoromethylpyridin-2-yl) -1-ethoxycarbonyl- 5 methylbenzotriazole and 5- (3-chloro-5-trifluoromethylpyridin-2-yl) -1-ethoxycarbonyl- methylbenzotriazole 0.5 g of sodium hydride (80% strength by weight suspension in 10 mineral oil) in 25 ml of anhydrous dimethylformamide was treated dropwise with a solution of 4.4 g of 5- (3-chloro-5-trifluoro¬ methylpyridin-2-yl)benzotriazole in 25 ml of dimethylformamide. After stirring for 15 min, 2.6 g of ethyl bromoacetate were added dropwise, after which the mixture was stirred at 23 * C for 15 20 hours. The batch was then poured into 200 ml of water. After extracting three times with 100 ml of tert-butyl methyl ether each time, the combined organic phases were washed with 100 ml of water, dried over sodium sulfate and concentrated. The oily resi¬ due was purified by means of chromatography on silica gel (elu- 20 ent: eyelohexane/ethyl acetate = 6:1). The following were eluted in succession (without taking into account mixed fractions) : 1.0 g of 5- (3-chloro-5-trifluoromethylpyridin-2-yl)-2-ethoxycar- bonylmethylbenzotriazole; m.p.: 127-129 C. 25 i H-NMR (270 MHz, in CDC1 3 ) : δ [ppm] = 1.29 (t,3H) , 4.30(q,2H), 5.56(s,2H), 7.79(d,lH), 7.99(d,lH), 8.08(s,lH), 8.34(s,lH), 8.88(s,lH) . 1.2 g of 6-(3-chloro-5-trifluoromethylpyridin-2-yl)-1-ethoxycar- 30 bonylmethylbenzotriazole; m.p.: 107-108 * C. i H-NMR (270 MHz, in CDCl 3 ) : δ [ppm] = 1.27 (t,3H), 4.25(q,2H), 5.48(s,2H), 7.82(d,lH), 7.93(s,lH), 8.09 (s,lH), 8.20 (d,lH), 8.89(S,1H) . 35 1.15 g of 5- (3-chloro-5-trifluoromethylpyridin-2-yl) -1-ethoxy- carbonylmethylbenzotriazole; m.p.: 123-124 C. iH-NMR (270 MHz, in CDCl 3 ): δ [ppm] = 1.28(t,3H), 4.27(q,2H), 40 5.47(s,2H), 7.60(d,lH), 7.95(d,lH), 8.10(S,1H), 8.57(s,lH), 8.90(S,1H). 45 Example 13 6- (3-Chloro-5-trifluoromethy1-2-pyridyl) -2,3-dihydroindol-2-one (Table 4, Compound no. Id.01) Preparation was carried out according to the following reaction scheme: 1st stage of reaction: 3-Chloro-2-[4- (bis-[1,1-dimethylethoxycarbonyl]methyl) -3- nitrophenyl]-5-trifluoromethylpyridine 0.9 g of an 80% strength by weight suspension of sodium hydride in mineral oil was added to 10 ml of anhydrous dimethylformamide. A solution of 5.1 g of di-tert-butyl malonate in 20 ml of dimethylformamide was added dropwise to this mixture, after which it was stirred for 30 minutes. A solution of 7.5 g of 3-chloro- 2- (4-fluoro-3-nitrophenyl)-5-trifluoromethylpyridine in 20 ml of dimethylformamide was then added dropwise. The reaction mixture was stirred at 23 * C for 20 hours and at 80 * C for 5 hours. The cooled reaction mixture was then poured into 200 ml of ice water. The aqueous phase was extracted three times with 100 ml of tert- butyl methyl ether each time. The combined organic phases were washed with 100 ml of water, dried over sodium sulfate and con¬ centrated. Yield: 10.8 g (79%) of a colorless oil. i H-NMR (270 MHz, in CDC1 3 ) : δ [ppm] = 1.51(s,18H), 5.20 (s,lH), 7.72(d,lH), 8.09-8.17 (m,2H) , 8.56(s,lH), 8.92(s,lH). 2nd stage of reaction: 3-Chloro-2- (4-hydroxycarbonylmethyl-3-nitrophenyl)-5-tri- fluoromethylpyridine 16 ml of trifluoroacetic acid were added dropwise to a solution of 10.2 g of 3-chloro-2-[4-(bis-[l,l-dimethylethoxycarbonyl]- methyl)-3-nitrophenyl]-5-trifluoromethylpyridine in 100 ml of anhydrous dichloromethane. After stirring at 23 * C for 65 hours, the methylene chloride was removed by distillation. The residue was dissolved in 100 ml of ether, after which the ether phase was extracted three times with 50 ml of water each time, dried over sodium sulfate and concentrated. The crude product was stirred with n-hexane/ether (9:1). Yield: 5.1 g (72%) of colorless crys¬ tals. - j -H-NMR (270 MHz, in CDC1 3 ): δ [ppm] = 4.17(s,2H), 7.51(d,lH), 8.07(dd,lH), 8.13(s,lH), 8.60(d,lH), 8.93(s,lH), 10.15 (br. ,IH) . 3rd stage of reaction: 6- (3-Chloro-5-trifluoromethyl-2-pyridyl) -2,3-dihydro- indol-2-one 5.1 g of 3-chloro-2- (4-hydroxycarbonylmethyl-3-nitrophenyl)- 5-trifluoromethylpyridine were added in portions to a suspension of 2.4 g of iron powder in a mixture of 26 ml of methanol and 13 ml of glacial acetic acid. After heating at reflux temperature for three hours, the mixture was diluted with 100 ml of ethyl acetate. The solid portion was then separated off and washed with ethyl acetate. The ethyl acetate phase was washed twice with a little water, dried over sodium sulfate and concentrated. Chroma¬ tography on silica gel using n-hexane/ethyl acetate (1:1) gave 2.85 g of a colorless oil. Yield: 64%. i H-NMR (250 MHz, in d 6 -dimethyl sulfoxide): δ [ppm] = 3.56 (s,2H), 7.14(s,lH), 7.32(d,lH), 7.37(d,lH), 8.57(s,lH), 9.04(s,lH), 10.55(S,1H) . The following Tables 1 to 14 show still further compounds I which were prepared or may be prepared according to one of the pro¬ cesses described: Table 1 53 Table 2 Table 3 Table 4 Id {R 1 ,R 3 =H; R 2 =CF 3 ; R 4 = Cl} Table 5 57 Table 6 Table 7 59 Table 8 Table 9 Table 10 61 Table 11 Table 12 62 Table 13 Table 14 Application examples for herbicidal activity it was possible to show the herbicidal action of the substituted 2-phenylpyridines I by means of greenhouse tests: The cultivation containers used were plastic flower pots contain¬ ing loamy sand containing about 3.0% humus as a substrate. The seeds of the test plants were sown separately according to spe¬ cies. In pre-emergence treatment the active compounds suspended or emulsified in water were applied directly after sowing by means of finely dispersing nozzles. The containers were lightly sprayed to promote germination and growth, and then covered with trans¬ parent plastic hoods until the plants had taken root. This cover- ing causes a uniform germination of the test plants if this had not been adversely affected by the active compounds. For the purposes of post-emergence treatment, the test plants 5 were raised, according to growth form, initially to a growth height of from 3 to 15 cm and only then treated with the active compounds suspended or emulsified in water. For this purpose, the test plants were either sown directly and cultivated in the same containers or they were first raised separately as seed plants 10 and transplanted into the test containers a few days before the treatment. The application rate for the post-emergence treatment was 0.0625 or 0.0313 kg/ha of a.s.. The plants were kept species-specifically at temperatures of 15 10-25"C or 20-35°C respectively. The test period ranged from 2 to 4 weeks. During this time the plants were tended and their reac¬ tion to the individual treatments was assessed. Assessment was carried out according to a scale from 0 to 100. 20 100 here means no emergence of the plants or complete destruction at least of the above-ground parts and 0 means no damage or normal course of growth. The plants used in the greenhouse tests consist of the following 25 species: 30 35 At an application rate of 0.0625 or 0.0313 kg/ha, undesired broad-leaved plants can be very effectively controlled post- emergence using the compound No. Ih.001. Application examples for growth-regulatory activity 40 The test plants used were young, 4-leaved (without seed leaves) cotton plants of the variety Stoneville 825, which were raised under greenhouse conditions (rel. atmospheric humidity 50 to 70%; day/night temperature 27/20 * C) . 45 The young cotton plants were subjected to foliar treatment until dripping wet with aqueous preparations of the active compounds indicated (with addition of 0.15% by weight of the fatty alcohol alkoxylate Plurafac LF 700, based on the spray liquor). The amount of water applied was the equivalent of 1000 1/ha. After 13 days the number of shed leaves and the degree of defoliation in % was determined. No leaf fall occurred in the untreated control plants.

Claims: We claim: 1. A substituted 2—phenylpyridine of the formula I where the substituents have the following meanings: R 1 , R 3 and R 4 independently of one another are hydrogen, halogen, Cχ-C -alkyl, Cι-C -haloalkyl, Cι-C -alkoxy-Cι-C -alkyl, Cι~C -alkoxy, Cχ-C -alkoxy- Cχ-C -alkoxy, hydroxyl, Cι-C -haloalkoxy, (Cχ-Cs-alkyl)- carbonyloxy, (Cχ-Cs-haloalkyl) carbonyloxy, SH, Ci—C—alkyl- thio, Cχ-C -alkylsulfinyl, Cχ-C -alkylsulfonyl, Cχ-C -halo- alkylthio, Cχ-C -haloalkylsulfinyl, Cχ-C -haloalkylsulfonyl, formyl, cyano, hydroxycarbonyl, (Cχ-C -alkoxy)carbonyl, Cχ-C -alkoxy-(Cχ-C -alkoxy)carbonyl, (Cχ-C -haloalkoxy)- carbonyl, (Cχ-C -alkyl)carbonyl, (Cχ-C 4 -haloalkyl)carbonyl, Cχ-C 4 -alkoxy-(Cχ-C 4 -alkyl)carbonyl, CONH 2 , (Cχ-C -alkyl)amino¬ carbonyl, di(Cχ-C -alkyl)aminocarbonyl, pyrrolidinylcarbonyl, piperidinylcarbonyl, morpholinylcarbonyl, nitro, amino, Cχ-C -alkylamino, di(Cχ-C -alkyl)amino, pyrrolidinyl, piperidinyl, morpholinyl, (Cχ-C -alkyl)carbonylamino,. (Cχ-C -haloalkyl)carbonylamino or Cχ-C 4 -alkylsulfonylamino; R 2 is halogen, cyano, nitro, Cχ-C -alkyl, Cχ-C -haloalkyl, Cχ-C -alkoxy, Cχ-C -haloalkoxy, Cχ-C -alkylthio, Cχ-C 4 -halo- alkylthio or together with R 1 or with R 3 is a trimethylene or tetramethy¬ lene chain; Ar is a radical 66 where R 5 is hydrogen or halogen; X is oxygen or sulfur; R 17 is halogen, cyano, nitro, hydroxyl, Cχ-C -alkoxy or trifluormethyl; R 18 is hydrogen, Cχ-C 6 -alkyl, Cχ-Ce-haloalkyl or Cχ-C -alkoxy-Cχ-C -alkyl and R 19 is hydrogen or Cχ-C 6 ~alkyl and where the ring R is a fused heterocyclic ring which, together with the phenyl ring, forms one of the following bicyclic rings (a) to (1) : (a) (b) (c) (g) (h) (i) (k) (1) R 6 , R 7 and R 10 independently of one another are hydrogen, Cχ-C δ -alkyl, C 2 -C 6 ~alkenyl, C 2 -C 6 ~alkynyl, Cχ-C 6 ~haloalkyl, C 2 -C 6 ~haloalkenyl, C 2 -C 6 -haloalkynyl, Cχ-C -alkoxy-Cχ-C -alkyl, Cχ-C -alkoxy-Cχ-C 2 -alkoxy- Cχ-C -alkyl, l-phenylpropen-3-yl, cyano-Cχ-C -alkyl, C 3 -C 6 -cycloalkyl-Cχ-C 6 -alkyl, (1-methylthiocycloprop-l-yl)- methyl, carboxyl-Cχ-C -alkyl, (Cχ-Cg-alkoxy)carbonyl- Cχ-C 4 -alkyl, (Cχ-C 6 ~haloalkoxy)carbonyl-Cχ-C -alkyl, Cχ-C -alkoxy-(Cχ-C 2 -alkoxy)carbonyl-Cχ-C 4 -alkyl, (Cχ-C 6 ~alkoxy)carbonyl-(Cχ-C 2 -alkoxy)carbonyl-Cχ-C 4 -alkyl, C 3 -C 6 -cycloalkyl-(Cχ-C 2 -alkoxy)carbonyl-Cχ-C 4 -alkyl, Cχ-C 5 -alkylaminocarbonyl-Cχ-C -alkyl, di-(Cχ-C 5 -alkyl)amino- carbonyl-Cχ-C -alkyl, C 3 -C 6 ~cycloalkyl, Cχ-C -alkylthio- Cχ-C -alkyl, Cχ-C -alkylsulfonyl, C 3 -C 6 -alkenyloxy- Cχ-C -alkyl, Cχ-C 8 -alkylcarbonyl, Cχ-Cβ-alkoxycarbonyl, Cχ-C 6 ~alkoxy, oxetan-3-yl-oxycarbonyl-Cχ-C -alkyl, thietan-3-yl-oxycarbonyl-Cχ-C -alkyl, oxetan-3-ylmethyl, 3-(Cχ-C -alkyl)-oxetan-3-ylmethyl or benzyl, which can be unsubstituted or can carry one to three radicals selected from the group consisting of halogen, Cχ-C -alkyl and Cχ-C 4 -alkoxy; R 8 and R 9 independently of one another are hydrogen, Cχ-C_j-alkyl, hydroxycarbonyl, (Cχ-C -alkoxy) carbonyl or together are ethylene, propylene, butylene, pentylene or hexylene; R 11 , R 12 , R 13 and R 14 independently of one another are hydrogen, halogen, Cχ-C 6 -alkyl, Cχ-C 6 -haloalkyl or Cχ-C —alkoxy-Cχ-C 4 -alkyl; R 15 and R 16 independently of one another are hydrogen, chlorine, bromine, Cχ-Cβ-alkyl, -OR 20 , -SR 21 or -N(R 2 )-R 23 ; R 20 and R 21 independently of one another are hydrogen, Cχ-Ca-alkyl, Cχ-Cβ-haloalkyl, C -C 7 -cycloalkyl, which for its part can carry up to three Cχ-C 3 -alkyl radicals, C 3 -C 6 ~alkenyl, Cs-C 7 -cycloalkenyl, which for its part can carry up to three Cχ-C 3 -alkyl radicals, C 3 -C 6 ~haloalkenyl, cyano-Cχ-Cβ-alkyl, C -C 6 -alkynyl, Cχ-C 4 -alkoxy-Cχ-C -alkyl, 2-tetrahydrofuranyl-Cχ-C 8 ~alkyl, 3-oxetanyl, 3-thietanyl, carboxyl-Cχ-C 6 -alkyl, (Cχ-Cβ-alkoxy)carbonyl-Cχ-C 6 -alkyl, (Cχ-C 6 ~alkoxy)carbonyl-(C 3 -C 7 -cycloalkyl) , Cχ-C -alkoxy- (Cχ-C -alkoxy) carbonyl-Cχ-C 6 _ alkyl, cyclopropylmethyl, (1-methylthiocycloprop-1-yl)methyl, -CH(SH)-COOH, -CH(SH)-CO-(Cχ-C 8 -alkoxy), -CH(C -C 8 -alkylthio)-COOH, -CH(C -C 4 -alkylthio)-CO-(C -C 8 -alkoxy) , -CH 2 -CO-N(R 9 )-R 10 , -CH(C -C 4 -alkyl)-CO-N(R 9 )-R i °, -C(C -C 4 -alkyl) 2 -CO-N(R 9 )-Ri°, -CH 2 -CO-N(R 9 )-S0 2 -(Cχ-C 4 -alkyl) , -CH(C -C 4 -alkyl)- CO-N(R 9 )-S0 2 -(Cχ-C 4 -alkyl) , -C(Cχ-C 4 -alkyl) 2 -CO-N(R 9 )- S0 2 -(Cχ-C 4 -alkyl), -S-CO-NH 2 , -S-CO-N(Cχ-C 4 -alkyl)- (Cχ-C 4 -alkyl) , -CH 2 -CO-0-(Cχ-C 6 -alkylene)-COOH, -CH -CO-0-(Cχ-C 6 -alkylene)-CO-(Cx-Cβ-alkoxy) , -C(Cχ-C 4 -alkyl) 2 -CO-0-(Cχ-C 6 -alkylene)-COOH, -C(Cχ-C -alkyl) 2 -CO-0-(Cχ-C -alkylene)-CO-(Cχ-C 6 ~alkoxy) , -CH(C -C -alkyl)-CO-O-(C -C 6 -alkylene)-COOH, -CH(Cχ-C 4 -alkyl)-CO-O-(Cχ-C 6 -alkylene)-CO-(Cχ-C 6 ~alkoxy) , C 3 -C 9 -(α-alkylalkylidene)iminooxy-Cχ-C 6 -alkyl, phenyl, phenyl- Cχ-C 6 ~alkyl, phenyl-C 3 -C 6 -alkenyl, phenyl-C 3 -Cg-alkynyl or phenoxy-Cχ-C 6 _ alkyl, where the phenyl ring in each case can be unsubstituted or can carry one to three radicals selected from the group consisting of halogen, nitro, cyano, Cχ-C -alkyl, Cχ-C -alkoxy, Cχ-C -alkylthio, Cχ-C -haloalkyl and C 2 -C 6 ~alkenyl, 5- or 6-membered heteroaryl, heteroaryl- Cχ-C 6 ~alkyl, heteroaryl-C 3 -C 6 -alkenyl, heteroaryl- C 3 -C 6 ~alkynyl or heteroaryloxy-Cχ-C 6 -alkyl, where the hetero¬ aromatic in each case contains one to three hetero atoms selected from a group consisting of one or two nitrogen atoms and an oxygen or sulfur atom, and where the heteroaromatic if desired can additionally carry on each substitutable ring atom a radical selected from the group consisting of hydroxyl, halogen, Cχ-C 4 -alkyl, Cχ-C 4 -alkoxy, Cχ-C -alkylthio and Cχ-C -haloalkyl; R 22 and R 23 independently of one another are hydrogen, Cχ-C 8 -alkyl, C 2 -C 8 -alkenyl, C 3 -C 8 -alkynyl, Cχ-C 8 -haloalkyl, C -C 4 -alkoxy-Cχ-C 4 -alkyl, Cχ-C 4 -alkylthio- Cχ-C 4 -alkyl, cyano-Cχ-C 8 -alkyl, carboxyl-Cι-C 4 -alkyl, (Cχ-C 4 -alkoxy)carbonyl-Cχ-C -alkyl, (Cx-Cβ-alkoxy)carbonyl- (C 3 -C -cycloalkyl) , Cχ-C 4 -alkylsulfonyl-Cχ-C 4 -alkyl, C 3 -C 8 -cycloalkyl, Cχ-C 6 ~alkoxy, (C 3 -C 6 -cycloalkoxy)-carbonyl- Cχ-C 4 -alkyl, Cχ-C -alkoxy-(Cχ-C 4 -alkoxy)carbonyl-Cι-C 4 -alkyl, phenyl, phenyl-Cχ-C 4 -alkyl, where the phenyl ring in each case can be unsubstituted or can carry one to three radicals selected from the group consisting of halogen, nitro, cyano, Cχ-C 4 -alkyl, Cχ-C 4 -alkoxy, Cχ-C -alkylthio, Cχ-C 4 -haloalkyl and C 2 -C 6 -alkenyl, 5- or 6-membered heteroaryl or heteroaryl- Cχ-C -alkyl, where the heteroaromatic contains one to three hetero atoms selected from a group consisting of one or two nitrogen atoms and an oxygen or sulfur atom, and where the heteroaromatic if desired can additionally carry on each sub- stitutable ring atom a radical selected from the group con¬ sisting of hydroxyl, halogen, Cχ-C 4 -alkyl, Cχ-C 4 -alkoxy, Cχ-C 4 -alkylthio and Cχ-C -haloalkyl; and the N-oxides of I and the agriculturally utilizable salts of I if these exist. 2. A substituted 2— henylpyridine of the formula I as claimed in claim 1, where R 1 and R 3 are hydrogen or halogen, R 2 is halogen or Cχ—C 4 —haloalkyl, R 4 is chlorine, R 5 is hydrogen, fluorine or chlorine. R 6 , R 7 and R 10 indenpendently of one another are hydrogen, Cχ-C 6 -alkyl, C 2 -C 6 ~alkenyl, C 2 -C 6 ~alkynyl or (Cχ-C δ -alkoxy) carbonyl-Cχ-C 4 -alkyl; R n , R 12 , R 13 , R 14 , R 18 and R 19 independently of one another are hydrogen or C-C 6 —alkyl; R 15 and R 16 independently of one another are hydrogen, chlor- ine or -OR 20 . 3. The use of the substituted 2— henylpyridines of the formula I, their N—oxides and/or agriculturally utilizable salts, as claimed in claim 1, as herbicides or for the desiccation and/or defoliation of plants. . A herbicidal composition containing a herbicidally effective amount of at least one substituted 2—phenylpyridine of the formula I or its N—oxide or agriculturally utilizable salt, as claimed in claim 1, and at least one inert liquid and/or solid carrier and, if desired, at least one adjuvant. 5. A composition for the desiccation and/or defoliation of plants, containing an amount having desiccant and/or defoliant activity of at least one substituted 2—phenylpyri¬ dine of the formula I or its N—oxide or its agriculturally utilizable salt, as claimed in claim 1, and at least one inert liquid and/or solid carrier and, if desired, at least one adjuvant. 6. A process for preparing herbicidally active compositions, which comprises mixing a herbicidally active amount of at least one substituted 2—phenylpyridine of the formula I, or its N—oxide or its agriculturally utilizable salt, as claimed in claim 1, and at least one inert liquid and/or solid carrier and, if desired, at least one adjuvant. 7. A process for preparing compositions having desiccant and/or defoliant activity, which comprises mixing a desiccant and/or defoliant active amount of at least one substituted 2—phenyl¬ pyridine of the formula I, or its N—oxide or its agricul¬ turally utilizable salt, as claimed in claim 1, and at least one inert liquid and/or solid carirer and, if desired, at least one adjuvant. 8. A process for controlling undesired plant growth, which com¬ prises allowing a herbicidally active amount of at least one substituted 2-phenylpyridine of the formula I or its N—oxide or agriculturally utilizable salt to act on plants, their environment or on seeds. 9. A process for the desiccation and defoliation of plants, which comprises allowing an amount having defoliant and/or desiccant activity of at least one substituted 2—phenylpyri¬ dine of the formula I or its N—oxide or agriculturally util- 5 izable salt to act on the plants. 10. A process as claimed in claim 9, wherein cotton is defoliated. 10 11. A process for preparing substituted 2—phenylpyridines of the formula I as claimed in claim 1, which comprises reacting a 2—halopyridine of the formula II 20 where Hal is chlorine or bromine. in the presence of a transition metal catalyst with an orga- nometallic compound of the formula III 25 Me - Ar III where Me is magnesium halogenid, zinc halogenid, tin 30 tri(Cχ-C 4 -alkyl) , lithium, copper or B(OR 24 ) (OR 25 ) , where R 24 and R 25 independently of one another are hydrogen or Cχ-C—alkyl or together are ethylene or propylene. 12. A process as claimed claim 11, wherein a compound III in -c which Me is B(OH) is used as the starting material. 13. The use of phenylpyridines of the formula IV 45 where the substituents R 1 to R 5 have the same meanings as in the compounds I as claimed in claim 1 and R 26 is fluorine, hydroxyl or Cχ-C 6 ~alkoxy, as intermediates for preparing the substituted 2—phenylpyri¬ dines of the formula I as claimed in claim 1. 14. The use of aromatic boronic acids or boronic acid esters of the formula XIX where R 5 and R 17 have the same meaning as in the compounds I as claimed in claim 1 and where R 24 and R 25 independently of one another are hydrogen or Cχ-C 4 -alkyl or together are ethylene or propylene and R 27 is hydrogen or Cχ-C 4 -alkoxy. 15. A 2-(4-hydroxy-5-nitrophenyl)pyridine of the formula IX where the substituents have the following meanings: R 1 , R 3 and R 4 are hydrogen, halogen, Cχ-C 4 -alkyl, Cι-C 4 -haloalkyl, Cχ-C 4 -alkoxy- Cχ-C 4 -alkyl, Cχ-C 4 -alkoxy, Cχ-C 4 -alkoxy-Cχ-C 4 -alkoxy, hydroxyl, Cχ-C 4 -haloalkoxy, (Cχ-Cs-alkyl)carbonyloxy, (Cχ-Cs-haloalkyl)- carbonyloxy, SH, Cχ-C 4 -alkylthio, Cχ-C 4 -alkylsulfinyl, Cχ-C 4 -alkylsulfonyl, Cχ-C 4 -haloalkylthio, Cχ-C 4 -haloalkyl- sulfinyl, Cχ-C 4 -haloalkylsulfonyl, formyl, cyano, C0 2 H, (Cχ-C 4 -alkoxy) carbonyl, Cχ-C 4 -alkoxy- (Cχ-C 4 -alkoxy)carbonyl. (Cχ-C 4 -haloalkoxy) carbonyl, (Cχ-C -alkyl)carbonyl, (Cχ-C 4 -haloalkyl)carbonyl, Cχ-C 4 -alkoxy-(Cχ-C 4 -alkyl) carbonyl, CONH 2 , (Cχ-C -alkyl)aminocarbonyl, di- (C -C 4 -alkyl)aminocar¬ bonyl, pyrrolidinylcarbonyl, piperidinylcarbonyl, morpho- linylcarbonyl, nitro, amino, Cχ-C 4 -alkylamino, di-(Cχ-C 4 -alkyl)amino, pyrrolidinyl, piperidinyl, morpholinyl, (Cχ-C 4 ~alkyl)carbonylamino, (Cχ-C 4 -haloalkyl)carbonylamino, Cχ-C 4 -alkylsulfonylamino or C0 2 θ M® ; where M® is Na + , K + , Ca 2+ , Mg 2+ , ammonium, or ammonium substituted by a Cχ-C 4 ~alkyl, Cχ-C 4 ~hydroxyalkyl, phenyl or benzyl radical, which, if desired, can carry one to three further Cχ-C 4 ~alkyl radicals, or R 1 and R 2 or R 2 and R 3 together are in each case a trimethylene or tetramethylene chain; R 2 is halogen, cyano, nitro, Cχ-C 4 -alkyl, Cχ-C 4 -haloalkyl, Cχ-C 4 -alkoxy, Cχ-C 4 -haloalkoxy, Cχ-C 4 ~alkylthio or Cχ-C 4 ~haloalkylthio; and R 5 is hydrogen or halogen. 16. A 2-( -hydroxy-5-aminophenyl)pyridine of the formula X where the substituents have the following meanings: R 1 , R 3 and R 4 are hydrogen, halogen, Cχ-C 4 -alkyl, Cχ-C 4 ~haloalkyl, Cχ-C 4 -alkoxy- Cχ-C 4 -alkyl, Cχ-C 4 ~alkoxy, Cχ-C 4 -alkoxy-Cχ-C 4 -alkoxy, hydroxyl, Cχ-C 4 -haloalkoxy, (Ci-Cs-alkyl)carbonyloxy, (Cχ-C 5 -haloalkyl)carbonyloxy, SH, Cχ-C 4 -alkylthio, Cχ-C 4 -alkylsulfinyl, Cχ-C 4 -alkylsulfonyl, Cχ-C4~haloalkylthio, Cχ-C 4 -haloalkylsulfinyl, Cι-C 4 -haloalkylsulfonyl, formyl, cyano, C0 2 H, (Cχ-C -alkoxy)carbonyl, Cχ-C -alkoxy- (Cχ-C 4 -alkoxy)carbonyl, (Cχ-C 4 -haloalkoxy)carbonyl, (Cχ-C 4 -alkyl)carbonyl, (Cχ-C 4 -haloalkyl)carbonyl, Cχ-C 4 ~alkoxy- (Cχ-C 4 -alkyl)carbonyl, CONH 2 , (Cχ-C 4 ~alkyl)amino¬ carbonyl, di-(Cχ-C 4 -alkyl)aminocarbonyl, pyrrolidinylcarbonyl, piperidinylcarbonyl, morpholinylcarbonyl, nitro, amino, Cχ-C 4 -alkylamino, di-(Cχ-C4~alkyl)amino, pyrrolidinyl, piperidinyl, morpholinyl, (Cχ-C 4 ~alkyl) carbonylamino, (Cχ-C -haloalkyl)carbonylamino, Cχ-C 4 -alkylsulfonylamino or C0 2 Θ M® ; where M® is Na + , K + , Ca 2+ , Mg 2+ , ammonium, or ammon¬ ium substituted by a Cχ-C 4 ~alkyl, Cχ-C 4 ~hydroxyalkyl, phenyl or benzyl radical, which, if desired, can carry one to three further Cχ-C 4 -alkyl radicals, or R 1 and R 2 or R 2 and R 3 together are in each case a trimethylene or tetramethylene chain; R 2 is halogen, cyano, nitro, Cχ-C 4 -alkyl, Cχ-C 4 -haloalkyl, Cχ-C 4 -alkoxy, Cχ-C 4 -haloalkoxy, Cχ-C 4 ~alkylthio or Cχ-C 4 -haloalkylthio; and R 5 is hydrogen or halogen. A carboxanilide of the formula XII where the substituents have the following meanings; R 1 , R 3 and R 4 are hydrogen, halogen, Cχ-C 4 -alkyl, Cι-C 4 -haloalkyl, Cι-C 4 -alkoxy- Cχ-C 4 ~alkyl, Cχ-C 4 ~alkoxy, Cχ-C 4 -alkoxy-Cχ-C 4 ~alkoxy, hydroxyl, Cχ-C 4 ~haloalkoxy, (Cχ-Cs-alkyl)carbonyloxy, (Cχ-Cs-haloalkyl)- carbonyloxy, SH, Cχ-C 4 -alkylthio, Cχ-C 4 -alkylsulfinyl, Cχ-C 4 -alkylsulfonyl, Cχ-C 4 -haloalkylthio, Cχ-C 4 -haloalkyl- sulfinyl, Cχ-C 4 ~haloalkylsulfonyl, formyl, cyano, C0 2 H, (Cχ-C 4 ~alkoxy)carbonyl, Cχ-C 4 ~alkoxy- (Cχ-C 4 -alkoxy)carbonyl, (Cι-C 4 -haloalkoxy)carbonyl, (Cχ-C 4 ~alkyl)carbonyl, (Cχ-C 4 -haloalkyl)carbonyl, Cχ-C 4 ~alkoxy-(Cχ-C 4 ~alkyl) carbonyl, CONH 2 , (Cχ-C 4 -alkyl)aminocarbonyl, di-(Cχ-C 4 ~alkyl)aminocar- bonyl, pyrrolidinylcarbonyl, piperidinylcarbonyl, morpho- linylcarbonyl, nitro, amino, Cχ-C 4 -alkylamino, di-(Cχ-C 4 ~alkyl)amino, pyrrolidinyl, piperidinyl, morpholinyl, (Cχ-C 4 ~alkyl)carbonylamino, (Cχ-C 4 ~haloalkyl)carbonylamino, Cχ-C 4 -alkylsulfonylamino or CO 2 0 M® ; where M® is Na + , K + , Ca + , Mg 2+ , ammonium, or ammonium substituted by a Cχ-C 4 -alkyl, Cχ-C 4 ~hydroxyalkyl, phenyl or benzyl radical, which, if desired, can carry one to three further Cχ-C 4 -alkyl radicals, or R 1 and R 2 or R 2 and R 3 together are in each case a trimethylene or tetramethylene chain; R 2 is halogen, cyano, nitro, Cχ-C 4 -alkyl, Cχ-C 4 ~haloalkyl, Cχ-C 4 -alkoxy, Cχ-C 4 -haloalkoxy, Cχ-C 4 -alkylthio or Cχ-C 4 -haloalkylthio; R 5 is hydrogen or halogen and R 11 and R 12 independently of one another are hydrogen, halogen, Cχ-C 6 -alkyl, Cχ-C 6 ~haloalkyl or Cχ-C 4 -alkoxy-Cι-C 4 -alkyl.

Inventors: GERBER MATTHIAS, HAMPRECHT GERHARD, HEISTRACHER ELISABETH, KLINTZ RALF, KOENING HARTMANN, MUENSTER PETER, RANG HARALD, SCHAEFER PETER, WALTER HELMUT, WESTPHALEN KARL-OTTO, GERBER, MATTHIAS, HAMPRECHT, GERHARD, HEISTRACHER, ELISABETH, KLINTZ, RALF, KOENING, HARTMANN, MUENSTER, PETER, RANG, HARALD, SCHAEFER, PETER, WALTER, HELMUT, WESTPHALEN, KARL-OTTO
Applicants: BASF AG, GERBER MATTHIAS, HAMPRECHT GERHARD, HEISTRACHER ELISABETH, KLINTZ RALF, KOENING HARTMANN, MUENSTER PETER, RANG HARALD, SCHAEFER PETER, WALTER HELMUT, WESTPHALEN KARL OTTO, BASF AKTIENGESELLSCHAFT, GERBER, MATTHIAS, HAMPRECHT, GERHARD, HEISTRACHER, ELISABETH, KLINTZ, RALF, KOENING, HARTMANN, MUENSTER, PETER, RANG, HARALD, SCHAEFER, PETER, WALTER, HELMUT, WESTPHALEN, KARL-OTTO
Application year: 1994
Main classification: C07D401
IPC codes: A01N43, A01N47, C07D213, C07D265, C07D401, C07D405, C07D409, C07D413, C07D417